GMC Motor Home Operating Manual Download

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Summary of Contents for Motor Home

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Page 2: ...nd specifications contained in this manual are based on the latest product information available at the time of pub lication The right is reserved to make changes at any time without notice For vehicles sold in Canada substitute the name General Motors of Canada whenever the name GMC Truck Coach Division appears in this manual Service Publications GMC TRUCK COACH DIVISION GENERAL MOTORS CORPORATIO...

Page 3: ...le Operating Speeds 11 Radios and Tape Deck 25 Starting and Operating Vehicle 13 Mobile Radio Transmitters 27 Engine Exhaust Gas Caution 13 Power Level System 2 7 Steering Column Controls 14 Operation of Living Area Facilities 29 Anti Theft Steering Column Lock 14 Living Area Facilities Caution 29 Parking 14 Living Area Electrical System 29 Starting Engine 14 General Information 29 Automatic Trans...

Page 4: ...cs 60 Removal of Specific Stains 60 Exterior Appearance Care 61 Bright Metal Parts 61 Exterior Glass 61 Polishing and Waxing 62 Touch up Paint 62 Undercoating 62 Service and Maintenance 63 GMC Motor Home Maintenance Information 68 Explanation of Complete Vehicle Maintenance Schedule 68 Lube General Information 68 Safety Maintenance 69 Emission Control Maintenance 71 Motor Generator Maintenance Det...

Page 5: ...BJECT PAGE NO Sanitizing Living Area Water System 105 Winterization 106 Vehicle Storage 106 New Vehicle Warranty 111 Emission Control Systems Information Locations 128 U S Zone Territories 131 U S Zone Offices 132 Mexico Zone Office 132 GM of Canada Limited Zone Offices 133 Sudden Service System 134 After Hour Service Assistance 134 Maintenance Manual 134 Index 135 Gas Station Information 141 LP G...

Page 6: ...XLE CAPACITY 4 200 LBS 1L GVW RATING 10 500 LBS TOTAL WEIGHT AT GROUND 10 500 LBS REAR AXLE CAPACITY 7 000 LBS u Vehicle Loading Model 230 1 The weight of the load must be properly dis tributed over both the front and the rear axles although not necessarily evenly The plate shows the maximum weight that the front axle can carry and the maximum weight that the rear axles can carry Note that the sum...

Page 7: ...ight Rating GVW and the Maximum Capability rating for the Motor Home to which it is attached The As Manufactured rating represents the vehicle s load carrying capabilities as initially manufactured The Maximum Capability rating shown on the plate is the manufacturer s gross weight rat ing which is attainable for that vehicle provided the required optional equipment is installed Gross Vehicle Weigh...

Page 8: ... is important that the tires on your vehicle be of proper size and be properly inflated It is important to avoid over inflation as well as under inflation Refer to WHEELS AND TIRES later in this manual under SERVIC ING DETAILS for tire inflation information REAR BUMPER LOADING Care must be taken with racks or temporary attachments when attached to the rear bumper Such items could nullify the energ...

Page 9: ...l LP gas controls on furnace range oven and optional gas electric re frigerator are turned off 9 Check that all interior stowage is securely held Check that all lights and switches are set in positions suitable for travel 11 Position driver s seat for comfort 12 Check that driver s and front passenger s seat and any other swivel mounted seats are locked in position 13 Check adjustment of inside an...

Page 10: ...red position The seats can be swiveled except dual pas senger seat in Model 260 to provide easy en trance and exit To turn swivel seat release lock Seat Swivel Mechanisms 6 Seat Track Mechanism ing mechanism by moving seat swivel lever then turn seat CAUTION Check that all swiveling seats are locked in position before driving off If any seat swiveled during an accident the occu pant may be more li...

Page 11: ...r from inside the vehicle push lock button IN To unlock and open door from inside pull the locking button OUT and lift or push down on inside door handle Type 1 Door Latch VIEWED FROM OUTSIDE VEHICLE TYPE 2 DOOR LATCH Illustrated on Next Page The entrance door may be locked from out side the vehicle by inserting the key into the door key lock and turning To unlock turn in the counterclockwise dire...

Page 12: ...e twisted belt may cause the retractor to jam so it will not rewind further Type 2 Door Latch while at the same time the retractor s locking mechanism prevents the belt from being with drawn If a belt should become jammed you may be able to release it by pulling the belt out far enough to untwist it Otherwise the retractor will require servicing Lap belts at seating positions other than the front ...

Page 13: ...t up by himself but can not see out the window should sit on a firm cushion with the regular lap belt restraining him at the hips The cushion should be as firm as practical and just high enough to enable the child to look horizontally out of the window The use of a cushion should be discontinued as soon as the child is old enough to see out of the windows without it 4 It is recommended that childr...

Page 14: ...his manual BREAK IN SCHEDULE In addition to the New Vehicle Operating Speeds given later in this section it is recom mended that your new Motor Home be operated for 500 miles before trailer towing If it is necessary to tow during this period avoid speeds over 50 MPH and full throttle starts 10 CAUTIONS 1 Trailer brakes are required on trailers over 1 000 lbs loaded weight 2 DO NOT tap into vehicle...

Page 15: ...ed up When traveling in winter it is recommended that the water tank not be filled until the des tination is reached This will ensure that the vehicle has thoroughly warmed up The water and holding tank systems should be drained be fore leaving for home Also at this time put some non toxic non flammable anti freeze into the sink and shower traps Heat tape has been found useful in preventing pipe f...

Page 16: ...es any more than needed to move vehicle in or out of area When vehicle is stopped in an UNCONFINED area with the engine running for any more than a short period of time adjust heating or cooling system to force outside air into the vehicle as follows 1 On vehicles not equipped with automotive air conditioning set fan to medium or high speed and upper control lever to any position except OFF Lower ...

Page 17: ... in PARK OFF Permits turning engine off without locking steering wheel and shift controls RUN Normal operating position START Permits engagement of starter NOTE The anti theft steering column lock is not a substitute for the parking brake Always set the parking brake when leaving the driver s seat unattended PARKING When leaving the driver s seat unattended SET PARKING BRAKE FIRST Place transmissi...

Page 18: ... until the engine cleans itself of excess gasoline and runs smoothly If engine doesn t crank properly due to a discharged main battery automotive bat tery place the battery switch in the BAT BOOST position Return the switch to the BAT NORMAL position when engine starts NOTE Do not continue cranking the engine for more than 30 seconds at a time to prevent start ing overheating 1 5 Transmission Shif...

Page 19: ... overheating which reduces brake effectiveness Use caution when shifting into lower range or lower gear on slippery surfaces with vehicle moving the abrupt engine brak ing action could cause the front wheels to skid HAZARD WARNING FLASHER For operation of hazard warning flasher see In Case of Emergency later in this manual HORN CONTROL The horn is actuated by depressing the rec tangular shaped GMC...

Page 20: ... to the cruising speed set prior to the acceleration TO DISENGAGE Lightly apply the brake pedal to disengage system CAUTION DO NOT use the Cruise Control when conditions are not suitable for maintain ing a constant speed such as in heavy or varying traffic or on winding or slip pery roads With the Cruise Control en gaged releasing the accelerator pedal does not permit engine speed to return to idl...

Page 21: ...ine is inoperative When reserve power is exhausted the vehicle can still be stopped by applying greater force to the pedal Motor Home Floor Controls 1 8 AUTOMATIC BRAKE ADJUSTERS Brakes on this Motor Home except for the Parking Brake are self adjusting designed to eliminate periodic adjustments Drum brake adjustments are made automati cally as the brakes are applied while Motor Home is moving back...

Page 22: ...e parking brake should be set first whenever the driver s seat is left unattended If the vehicle is parked on a grade and the transmission is placed in PARK before the parking brake is set the weight of the Motor Home may exert so much force on the parking pawl in the transmission than the transmission selector lever cannot later be pulled out of PARK To prevent this the parking brake should be ap...

Page 23: ...uel level in the main tank when fuel selector switch is in the FUEL MAIN position and the fuel level in the auxiliary tank when fuel selector switch is in the FUEL AUX position The pointer will indicate the correct positions only when the ignition is in the ON position Since both fuel tanks are interconnected the 1 WINDSHIELD WIPER CONTROL 7 OIL PRESSURE GAUGE 13 GENERATOR LIGHT 2 SPEEDOMETER 8 WA...

Page 24: ...ignition key in the ON position and the engine not running This light lets you know the warning signal is oper ational Should the light fail to come on see your Motor Home service outlet When the en gine is started the warning light should go out and remain out If the light remains on when engine is running have your service outlet locate and correct the trouble as soon as possible 21 Speedometer ...

Page 25: ...l in the auxiliary tank goes below five gallons At this point both fuel tanks of your Motor Home are nearly depleted SET POWER LEVEL TO TRAVEL Op tional Light This light is designed to inform the driver that the optional power level con trols should be set to the TRAVEL position before driving the Motor Home also a buzzer will sound for approximately 10 seconds This will allow your Motor Home s ai...

Page 26: ...ehicle is running The diode assembly has sepa rate outputs to the two batteries and provides isolation betwen the batteries and their associ ated circuits whenever the engine is not running The main battery or automotive battery supplies power to the chassis circuit i e engine external lights etc The auxiliary battery liv ing area battery powers the Motor Home living area i e internal lights refri...

Page 27: ...and FAN switch lever to HI position Heat ing system output can be varied by moving temperature lever and FAN lever to differ ent positions 24 Automotive Air Conditioner Controls With the lever in the DEF position the sys tem operates the same as in the HEATER position except most of the air flow will be through the defroster outlets at the wind shield RECIRC COLD HOT This lever used in conjunction...

Page 28: ...tions With the lever in DEF position system op erates the same as in the HEATER position except most of the air flow will be through the defroster outlets at the windshield RECIRC COLD HOT This lever used in conjunction with the system selector lever OFF A C VENT HEATER DEF and the FAN switch lever will control the temperature of the output air being distributed 2 5 Push Button AM Radio CAUTION Op...

Page 29: ...come necessary to make this adjust ment see your GMC Motor Home service outlet The indicator light will be on when the radio is tuned to an FM stereo station Most broadcasts on such stations will be in stereo 26 AM FM Stereo Radio with Tape Deck Tape Installed To Tune Your Stereo Radio Tune radio to an FM Stereo station one which makes the indicator light come on with a steady glow Tune the lever ...

Page 30: ...al Motors of Canada Limited Product Service Department Oshawa Ontario Power Level System Controls 27 POWER LEVEL SYSTEM The optional Power Level System provides the ability to level the vehicle at campsite or parking area where the ground is not level This system overrides the automatic leveling feature that maintains a constant ride height at the rear tandem suspension The Power Level System can ...

Page 31: ...n determining the desired level condition For continuing satisfaction keep your Motor Home all GM General Motors Parts are identified by one of these trademarks V Delco OFF ROAD OPERATION In order to gain maximum ground clearance both control knobs should be placed in the RAISE position It is recommended that a speed of 15 MPH should not be exceeded since the air suspension in this position has ma...

Page 32: ... such as snow leaves dirt grease etc See ENGINE EXHAUST GAS CAUTION carbon monoxide page 13 GENERAL INFORMATION The Motor Home living area electrical sys tem is designed for utmost convenience It is capable of supplying the vehicle with power from at least two sources three if equipped with a motor generator All electrical components except the water heater the roof mounted air conditioner if equi...

Page 33: ...To make an external power connection re move the cord from the compartment and plug it into a suitable power receptacle All internal switching will take place automatically When disconnecting from an external power source the power cord should be plugged into the motor generator receptacle within the external utilities compartment This connects the motor gener ator to the Motor Home electrical sys...

Page 34: ...nel and Motor Generator Switch 31 HOLDING TANK This is designed to in dicate content level in the holding tank Never allow this gauge to reach the FULL mark If the holding tank is overfilled the overflow will back up through the bathroom shower drain These gauges are activated by a ROCKER switch located on the face of the panel This switch has three positions ON OFF and MOMENTARY ON An indicator l...

Page 35: ...ircuit breaker does trip remove part of the electrical load and reset the breaker 32 HIGH TEMPERATURE OPERATION Make sure that nothing obstructs air flow to and from the unit Keep cooling fins clean Motor generator housing should be unaltered and undamaged LOW TEMPERATURE OPERATION 1 Use correct SAE No Oil for temperature conditions see SERVICE AND MAINTE NANCE section later in this manual to dete...

Page 36: ...st be added to the crank case There is a reset button above the low oil light which also must be pressed to restart the motor generator Your GMC Motor Home is equipped with its own self contained water system Refer to Water System Schematics on next page The water tank and pressure pump is located at the right rear corner of the Motor Home The water pump switch is located on the kitchen wall betwe...

Page 37: ...ER FILL CAP WATER TANK DRAIN VALVE WATER PUMP WATER TANK VEN WATER TANK COLD WATER HOT WATER WATER FILL Living Area Water System Schematic Model 230 HAND HELD SHOWER HEAD WATER HEATER WATER HEATER DRAIN COCK TEE SHUT OFF VALVE OPTIONAL jT r WATER FILTER OPTIONAL DRAIN COCKS HOSE CONNECTION CITY WATER INLET COLD WATER HOT WATER DRAIN COCK WATER FILL VALVE RECIRCULATING TOILET Living Area Water Syst...

Page 38: ...r tank has been dry EXTERNAL WATER CONNECTION Connecting to a park or city water supply is easily accomplished It is not necessary to drain the vehicle s water system 1 Remove the plastic cap at the hose con nection located in the external utilities compart ment 2 Attach garden hose and turn ON external water supply 3 When disconnecting hose be sure to install plastic cap at hose connection to aid...

Page 39: ...aintenance Schedule for water pump belt checking interval Adjustment is required if there is more or less than 1 a inch slack in the belt as it is depressed by your finger between the pulleys To adjust belt tension loosen the two 2 nuts on the end of the motor move the motor to provide proper tension and tighten nuts WATER HEATER Your GMC Motor Home is equipped with a 6 gallon 120 volt AC hot wate...

Page 40: ...unning time of the refrigerator and draw less current from the battery A setting of 3 is a normal position 2 Always operate the refrigerator with a 120 volts AC source connected to the Motor Home when available especially during initial start up of the unit Depending upon the ambi ent temperature the initial start up may require one to two hours continuous operation before refrigeration temperatur...

Page 41: ...Panel 5 Turn the GAS CONTROL knob to coldest setting 6 Push in on IGNITION button Depress the IGNITER lever and release it after you have heard the audible click and the gas burner has been lit NOTE In case of ignition failure depress IGNITER lever again as air may be present in the gas lines at the first attempt 7 Release the IGNITION button about 20 seconds after the burner flame has been on 8 I...

Page 42: ...y of the refrigerator should be kept in mind 39 Temperature Control Thermostat The temperature control thermostat will permit variation of cabinet temperature The position of the temperature control should de pend upon the refrigerator load When the food load is heavy turn the temperature control to a higher step A higher setting of the tempera ture control will be required in summer than in winte...

Page 43: ...ION The Range Oven should not be used when the vehicle is moving The burners or pilot lights may blow out creating a fire or explosion hazard In addition a sudden movement of the vehicle could throw utensils or scalding liquids from the stove which could result in serious personal injury or property damage OPERATION OF 3 BURNER UNIT Range 1 Turn on power range hood fan 2 Be sure all knobs are in t...

Page 44: ...all flame should be noted at the top of the pilot burner Upon initial light up it may take a minute or so to clear the air from the line so the flame stays lit CAUTION When lighting pilots BOTH pilots must be lit even if plans are to use just one cooking means Once the oven thermo stat is moved from the TOP OVEN PILOTS OFF position gas will issue from both the range and oven pilots Failure to ligh...

Page 45: ...wash ing in hot soapy water OVEN DRUM Clean as soon as possible after use when the oven is cool Grease spat ters that are allowed to become hard and baked on become very difficult to remove Care must be taken to avoid bending the tube clipped to the top of the oven This is the thermal sensing element and could cause a variation between the oven temperature and the dial setting If oven cleaners are...

Page 46: ...system it is especially important that flammable cleaning agents solvents or other highly combustible materials never be allowed to enter the holding tank via the kitchen or bathroom sinks toilet or shower drains These materials could create an explosion hazard in the vehicle exhaust system For further information refer to the CAUTION and text under the THER MASAN SYSTEM in this section STANDARD T...

Page 47: ...amage the plastic or rubber parts in the system 2 Special non toxic non flammable deodoriz ing chemicals can be added to holding tank but are not required Follow directions on container 3 Most toilet tissues are usable in system 44 Dumping Waste Contents of Recirculating Toilet Several special tissues designed to break down and flow away readily are available 4 Keep your holding tank drain valve c...

Page 48: ...ay some toilet tissue in the bowl just prior to use 45 Shower Head BATHROOM SINK AND SHOWER CONTROL VALVE Your Motor Home is equipped with a bath room sink with an integral shower control valve in the spout With the shower control valve knob pushec in the off position water temperature may be adjusted prior to taking a shower Once the de sired temperature is set remove the shower head from the wal...

Page 49: ...or lights The ON OFF switch con tains a rheostat control to be used if dimming the indicator lights is desired during night operation When switched to the ON position the green READY indicator will light This tells you the system is operational When the speed and temperature requirements are met the red REACTION indicator will light which tells you the system is physically destroying waste if wast...

Page 50: ...ard the front of the unit the air flow will be from the front vent The knob can be positioned toward the rear to activate the rear vent An intermediate position will provide a proportional mixture of air to the front and rear vents The unit is shut down by placing the blower switch in the OFF position This unit is equipped with a delayed start feature When the unit is turned on fans will start and...

Page 51: ...ng two minutes of burner operation a snap will be heard from within the furnace This is the furnace fan switch changing to its normal run position After this occurs and the thermostat is satisfied or is turned to a lower setting the main burner flame will go out but the blower will continue to run for a short period of time and then shut off If thermostat is adjusted to a lower setting or to OFF b...

Page 52: ...e steps as a precaution when the furnace will not be in use FURNACE OPERATING TIPS Lack of Heat Main Burner Out The most common reason pilot is out This can be caused by 49 lack of air PILOT ADJUSTMENT Furnace Pilot Adjustment 1 L P G tank empty or turned off 2 Pilot not adjusted properly 3 Clogged pilot orifice 4 Malfunctioning micro switch 5 Weak thermocouple or safety valve 6 Air leakage from c...

Page 53: ...djusted with a screwdriver 4 Adjust until a slight trace of orange can be seen at the top of the burner flame Turn ing screw counterclockwise adjusts burner for less primary air Turning screw clock wise adjusts burner for more primary air NOTE The symptoms of improper adjustment are a Too little air sooting on exterior vent and a distinct yellow and floating flame b Too much air howling or screech...

Page 54: ...om the wall Unfold the additional section on the back support to bring it to full width 5 1 Front Davo Converted to Bunks The two support straps can now be hooked to the eyes provided in the ceiling SWIVEL CHAIRS Front Davo If the Motor Home is equipped with the swivel chairs in the living area they are operated in the same manner as the seats in the driver s compartment They should be locked in p...

Page 55: ...erts into a double bed for sleeping This is done by grasping 52 Preparing Settee for Sleeping Settee in Sleeping Position the top of one of the backrests and pulling it up and toward the center of the vehicle The mechanism will automatically flip the armrest to the proper position between the seats The other side will fold down in a similar manner This will form the double bed as shown To convert ...

Page 56: ... BAT NORMAL posi tion This allows your power converter to charge the auxiliary battery Leave the battery switch in the BAT NORMAL position for approximately 30 minutes with the motor generator operating Then change the battery switch to BAT BOOST position and start vehicle as you would normally When vehicle has started 53 return battery switch to BAT NORMAL position To start the vehicle when both ...

Page 57: ...ht Radiator Mounting Bracket 2 Remove vent caps from both the booster and the discharged batteries Lay a cloth over the open vent wells of each battery These two actions help reduce the explosion hazard always present in either battery when connecting live booster batteries to dead batteries 3 Attach one end of one jumper cable to the positive terminal of the booster battery identified by a red co...

Page 58: ...changing wheels 3 Never get beneath the vehicle when using jack 4 Do not start or run engine while vehicle is on jack INSTRUCTIONS Park on level surface and set parking brake firmly Set transmission in PARK Activate Hazard Warning Flasher Jack jack chain handle jacking pad wooden block and lug wrench are located under dinette seat 55 Jacking at Front of Motor Home Block both front and rear of the ...

Page 59: ...Valve Link Arm TOWING AT FRONT NOTE Attachments must be to frame front crossmember of the Motor Home not to bump ers or bracketing Separate safety chains or cables should be used Care must be taken in installation of chains to ensure that they do not cause damage Remember that power brake and steering assists will not be available when engine is inoperative Certain other precautions are required w...

Page 60: ...e in an emergency can be used as an exit To use the emergency exit pull the ring located at the top center of the rear window until window seal is removed and then push the glass out of the frame Do not pull ring except in case of emer gency The window is not hinged and it is de signed to be pushed out Take care that window EMERGENCY EXIT PULL RING Emergency Exit Pull Ring will not fall on anyone ...

Page 61: ... tard etc are extremely difficult and in some cases impossible to completely remove When cleaning this type of stain or soilage care must be taken not to enlarge the soiled area It is sometimes more desirable to have a small stain than an enlarged stain as a result of attempted cleaning CAUTION When cleaning interior do not use vola tile cleaning solvents such as acetone lacquer thinners enamel re...

Page 62: ...im with a clean dull knife or scraper Use very little cleaner light pressure and clean cloths pre ferably cheesecloth Cleaning action with cloth should be from outside of stain towards center and constantly changing to a clean section of cloth When stain is cleaned from fabric im mediately wipe area briskly with a clean ab sorbent towel or cheesecloth to help dry area and prevent a cleaning ring I...

Page 63: ...ght metal polishes containing harmful abrasives EXTERIOR APPEARANCE CARE 61 TAR Remove excess with dull knife moisten with fabric cleaning fluid scrape again rub lightly with additional cleaner BLOOD Wipe with clean cloth moistened with cold water Use no soap URINE Sponge stain with lukewarm soap suds from mild neutral soap on clean cloth rinse with cloth soaked in cold water saturate cloth with o...

Page 64: ...il and tars from painted surfaces are detrimental to acrylic enamel finishes When purchasing a cleaner make sure the instructions on the container specifically state that the con tents can be used on any acrylic enamel finish TOUCH UP PAINT Nicks and chips in paint surfaces should be touched up before weathering action begins The best time to detect them is right after the Motor Home has been wash...

Page 65: ...ou have any question about perform ing any service have the service performed by a competent serviceman ACCESSIBILITY EXTERIOR COMPARTMENTS doors Their locations are shown on the follow ing illustrations further information about each Your GMC Motor Home has an entrance compartment s content is covered in those par door on the right side and six compartment ticular sections LP GAS DOOR ENTRANCE DO...

Page 66: ...radiator radiator cap en gine coolant reservoir and the air conditioner receiver dehydrator sight glass optional Items that can be checked or filled through the left Right Front Access Compartment 64 Removing Engine Access Cover access door are the windshield washer reservoir brake master cylinder engine oil dipstick and the air compressor Be sure to secure the access doors after clos ing them by ...

Page 67: ...rs by securing bolts The securing bolts have rings and may be loosened or tight ened by hand or screwdriver The cover is de Engine Compartment 65 signed to ing lip 10 7THERMAL VACUUM SWITCH 8 ENGINE OIL FILL HOSE TUBE ASM 9 CARBURETOR CHOKE COIL COVER 10 PCV VALVE 11 AIR CONDITIONING COMPRESSOR OPTIONAL be secured at the front by a retain To remove the engine cover loosen the secur ing bolts and l...

Page 68: ...l ventilated Refer to the Complete Vehicle Maintenance Schedule for service intervals and lubricant recommendations Required checking and ad justing of the engine components is covered later in this section ROOF CARRIER The optional roof carrier has a capacity of 250 lbs The ladder is designed for gaining ac cess to the roof carrier and should not be used for towing or as a luggage rack Remember i...

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Page 75: ...bon From Heads Adjust Tappets Check Generator Brushes Complete Reconditioning If Required 6 000 watt 1 4 000 watt 1 4 000 watt 4 000 watt 4 000 watt 1 4 000 watt 6 000 watt 2 4 000 watt 6 000 watt 1 6 000 watt 6 000 watt 4 000 watt 4 000 watt 6 000 watt 6 000 watt 1 Perform more often in extremely dusty conditions 2 Replace if necessary KOHLER 4 000 WATT MOTOR GENERATOR MAINTENANCE SCHEDULE SERVIC...

Page 76: ...ake system and master cylinder Delco Supreme 11 or DOT 3 fluid or equivalent Transmission shift linkage Engine oil Chassis lubrication Chassis grease meeting requirements of GM Transmission DEXRON automatic transmission fluid Parking brake cables Chassis grease Rear wheel bearings Chassis grease meeting requirements of GM 6031 M Body door hinge pins hinges and Engine oil latches at the front acces...

Page 77: ... filter change intervals assure you of continued proper lubrication of your Motor Home s engine RECOMMENDED SAE VISCOSITY Single grade oils are preferred however mul tigrades such as SAE IOW 30 or IOW 40 are also acceptable SAE 5W 20 oils are not recommended for sustained high speed driving SAE SW 30 oils if available may be used if extreme low temperatures are anticipated LUBRICATION DETAILS 75 S...

Page 78: ...N N N Z J 0 Z J N O e Z w Z 2 Z a w w w Q w L O w W J c J WQZ O w W J V_ 2 O w 0 N w w J 76 O w U a U O O U O a O Z Q N J Z J O Z W _Z V Z a _ Z CC W W W W W J ...

Page 79: ...ated under the engine access cover on the left side of the engine Use only automatic transmission fluids identi fied with the mark These fluids have been specially formulated and tested for use in your automatic transmission and are available from your GMC Motor Home service outlet or local service station Check the fluid level at each engine oil change period To make an accurate fluid level check...

Page 80: ...to 12 foot pounds 6 Add four 4 quarts of auto matic transmission fluid and check fluid as noted above FINAL DRIVE FINAL DRIVE LUBRICANT REPLACEMENT 1 Remove 10 cover attaching bolts Have a drain pan ready as lubricant will begin to drain as bolts are loosened 2 Remove cover and allow lubricant to drain Discard old gasket 3 Using a new cover gasket install cover Torque attaching bolts to 24 foot po...

Page 81: ...e and is designed to maintain the engine at proper operating temperatures The coolant reservoir collects coolant that ex pands with rising temperature that would other wise overflow from the system When the sys tem temperature drops the coolant is drawn from the coolant reservoir back into the radiator by suction created by coolant contraction It has been filled at the factory with a high quality ...

Page 82: ...G AND REFILLING Following is a suggested procedure for drain ing and refilling the cooling system 80 Radiator Drain Plug CAUTION To avoid the danger of being burned and prevent loss of coolant do not re move the radiator cap while the engine and radiator are still hot because the cooling system will blow out scalding fluid and steam under pressure 1 Run engine with radiator cap removed until norma...

Page 83: ...olant outlet to maintain a satisfactory operat ing temperature of the engine This thermostat is designed for continuous use through both winter and summer and need not be changed seasonally When replacement is necessary Delco parts are recommended 8 1 FUEL REQUIREMENTS Your Motor Home engine and optional motor generator are designed to operate on a good quality fuel of approximately 91 Research Oc...

Page 84: ...ssure is felt at choke valve 4 Continue rotating cover counterclockwise until cover mark is aligned with marks on choke housing NOTE Using this procedure will ensure choke valve just closing at 75 0 F Slow Idle Adjustment 1 Engine at normal operating temperature remove air cleaner disconnect air cleaner vac uum hose at intake manifold then plug fitting 2 Choke open and air conditioning off 3 Put t...

Page 85: ...eaner and recheck idle RPM Fuel Filter To replace carburetor filter disconnect fuel line remove filter nut gasket filter and spring Install spring and element open end of filter facing toward filter nut Install gasket tighten nut to 18 foot pounds torque IMPORTANT Tightening fuel inlet nut beyond specified torque can damage nylon gasket ENGINE AIR CLEANER The air cleaner is a disposable type eleme...

Page 86: ...event moisture in the tank and help prevent the lines from freezing in the winter You may find that in the southern part of the country only Butane is available for your LPG tank It will work fine except that at tempera tures below 30 F Butane is in a liquid state In this temperature range no vapor is produced to fuel the appliances If you expect to en counter temperatures below 30 F discharge the...

Page 87: ...ort circuit may occur which could cause per sonal injury For Battery Jump Starting Procedure see IN CASE OF EMERGENCY section DELCOTRON GENERATOR The Delcotron produces an AC alternating current which is converted to DC direct cur rent through diodes There is a continuous flow of direct current even at engine idle speed This permits the Delcotron to charge the batteries at engine idle And this in ...

Page 88: ...ngine Ignition Timing 8 6 pull the wires up out of the quick disconnect terminal When installing new point set pilot on contact set must engage matching hole in breaker plate Also make sure that flat side of wire terminals are inserted back to back in the quick disconnect terminal Install point set at taching screws Distributor Point Adjustment Distributor points can be adjusted through the window...

Page 89: ...er File center electrode flat Do not file center electrode on new plugs 3 Adjust spark plug gap to 040 using a round feeler gauge 4 Install plugs and torque to 35 foot pounds HEADLIGHTS Make a headlight beam adjustment check a regular part of your Safety Maintenance pro gram Sealed Beam units are No 6014 which 87 BEZEL RETAINING SCREWS VERTICAL ADJUSTMENT I v Headlight Replacement are equipped wit...

Page 90: ...me CAUTION Do not touch body of any installed breaker of this type with bare hands if circuit should happen to be shorted or overloaded the breaker body could be hot and cause a burn A replaceable fuse link is located at the bat tery pickup junction block behind the right access door If an overload should occur this link is designed to fail open circuit preventing dam age to the main wiring harnes...

Page 91: ...8AMP 4 WATER PUMP 6 2 AMP 2 LIGHTING L H READING 1 50A PORCH 59A HALL 2 88A R H DINETTE 2 88A STEP LIGHT 59A TOTAL 8 44 AMP FUSE BLOCK R H READING LIGHT REAR ROOF VENT FAN HALL LIGHT THERMOSTAT BATH VENT FAN BATH LIGHT 3 FURNACE BLOWER 6 1A RANGE BLOWER RANGE HOOD AND LIGHTS 5 5A KITCHEN LIGHT 1 44A TOTAL 13 04 AMP Living Area 12 Volt DC Electrical System Typical L P WASTE HOLDING TANK MONITOR PRO...

Page 92: ...ORD ASM AT BEDROOM ITEM NO PART NAME 1 CIRCUIT BREAKER PANEL 2 8 4 WIRE CORD TYPE SO W PLUG 3 WIRE 12 2 W GROUND WIRE 4 40 AMP BREAKER 5 20 AMP BREAKER 6 CABLE CONNECTOR 7 8 COPPER GROUND WIRE 8 OUTLET BOX 9 DUPLEX RECEPTACLE 10 OUTLET PLATE 11 SWITCH RECEPTACLE 12 8 4 WIRE CORD TYPE SO 13 3 POLE 4 WIRE RECEPTACLE 14 OUTLET BOX _ 15 OUTLET PLATE 16 J BOX 17 8 4 WIRE CORD ROMEX CIRCUIT BREAKER PANE...

Page 93: ...aily or at least every eight hours of operating time Check more often on a new unit as oil consumption is generally higher until piston rings seat properly CHANGING OIL Initial oil change should be made after the first 25 hours of operation change every 50 to 100 hours after that If operating in extremely dusty or cold weather conditions change oil more frequently The 4KW Model has an oil capacity...

Page 94: ... 6KW Model drain the fuel pump and check filter element Remove fuel pump mounting screws and turn off hex nut on base of pump If element appears dirty replace with a new one Be sure to replace gaskets when reassembling CARBURETOR BOWL Remove carburetor bowl from carburetor every 400 hours on the 4KW Model and every 500 hours on the 6KW Model and clean the screen in solvent Blow out with low pressu...

Page 95: ...d that spark plugs be replaced at the beginning of each new season COOLING SYSTEM The motor generator is cooled by a flywheel blower fan which pulls air over the cylinders and cooling fins The air path is directed by sheet metal shrouds and plates These shrouds and plates must always be installed properly so unit does not overheat Check and clean if necessary the cooling fins every 50 hours of ope...

Page 96: ... idle fuel adjustment IMPORTANT Forcing the needle against its seat will damage it The needle does not com pletely shut off fuel when turned fully in Before final adjustment allow the engine to warm up Make the idle adjustment under no load Open the main fuel adjustment until the engine runs smooth under acceleration with no load Slightly more fuel may be needed open about 1 4 turn further when su...

Page 97: ...at sur face to dislodge loose surface dirt Do not clean in any liquid or blow out with compressed air as this will damage filter material Replace the filter element every 100 operational hours 95 Kohler Motor Generator CAUTION Do not remove the air cleaner unless temporary removal is necessary during repair or maintenance When the air cleaner is removed backfiring can cause fire in the generator c...

Page 98: ...electric spark battery action generates hydrogen gas which is flammable and explosive Don t allow battery fluid to contact skin eyes fabrics or painted surfaces fluid is a sulfuric acid solution which could cause serious personal injury or property damage Wear eye protec tion when working with battery Remove rings metal watchbands and other metal jewelry before jump starting or working around a ba...

Page 99: ...ize 8 75 16 5 load range D construction type bias ply polyester cord or bias ply steel belted are recommended for installation on the Motor Home CAUTION Radial tires are not recommended for installation on the Motor Home Severe damage and possible personal injury could result 97 Use of any other tire may seriously affect ride handling speedometer odometer calibration ve hicle ground clearance and ...

Page 100: ...d fast cornering produce different types of abnormal wear which can be diagnosed by your dealer To equalize wear it is recommended that the tires be rotated every 6 000 miles or sooner if irregular wear develops as shown NOTE It is recommended that disc brake pads be inspected for wear whenever tires are rotated The original equipment tires incorporate built in tread wear indicators to assist you ...

Page 101: ...l off the floor and rotating the wheel while tightening nut At this time make the torque readings as follows 1 Tighten adjusting nut with a torque wrench to 25 30 foot pounds with wheel rotating to en sure that all parts are properly seated and threads are free 99 Location Front Ride Height Adjustment 2 Back off nut one half turn Re tighten nut finger tight 3 If unable to install cotter pin at fin...

Page 102: ...blems and shorten the service life of the vehicle Adjust front suspen sion ride height to specifications shown Rear Suspension Air Reserve Tank Checking Motor Home Ride Height 100 REAR SUSPENSION The rear suspension consists of control arms mounting brackets air bellows shock absorbers air compressor air reserve tank and height con trol valves The system operates automatically as load varies and i...

Page 103: ...eed for routine main tenance All bearings are lifetime oiled and sealed No lubrication is required Furthermore adjustments to the system are not required Rear Suspension Air Compressors Thermasan components may adhere to the exhaust system even though the contacting components are made of stainless and other special steels Any time the Motor Home ex haust system is being worked on care should be t...

Page 104: ...loor Adjust closet flange height accord ingly and replace closet flange seal 3 PROBLEM Foot pedal operates harder than normal or blade sticks SOLUTION Dry blade and apply a light film of Sili cone spray to blade 102 4 PROBLEM Toilet fails to flush with pedal depressed CAUSE Ball valve sheared off due to trying to flush toilet when water is frozen in valve SOLUTION Replace ball valve Toilet must be...

Page 105: ... wire is negative ground b Charge to proper level 3 gallons Fill to charge level c on indicator lens c Replace pump assembly 5 PROBLEM Lack of capacity CAUSE Too much charge water SOLUTION 103 Dump Hose Extension Stored DRAINING HOLDING TANK NOTE If holding tank is allowed to overfill the overflow will back up through the bathroom shower drain 1 Be sure the holding tank valve is closed It is locat...

Page 106: ... 8 It is advisable to add about 1 2 gallon of water and some non toxic non flammable odor control type chemical to holding tank 9 Be sure to push control valve handle back in as far as it will go and re latch two snap re tainers to assure valve will be positively locked while traveling 10 Restore extension to its tube and lock into bracket Replace dump hose in its bracket with dust cap in place DR...

Page 107: ...NITIZING LIVING AREA WATER SYSTEM To help assure complete sanitation of your living area water system it is recommended that the following procedures be followed on a new system one that has not been used for a period of time or one that may have become con taminated 1 Prepare a chloride solution using one gal lon of water and 1 4 cup of household bleach 5 sodium hypochlorite solution Pour one 105...

Page 108: ...les leave refrigerator door open Be sure controls are turned off 106 f Ventilate the living area drawers cabinets closets etc g Drain the holding tank toilet and living area water system as described earlier in this section Be sure the water pump and water heater are turned off h Turn off LP gas at tank valve i Make sure furnace manual valve and ther mostat are set at OFF range oven burners at OFF...

Page 109: ...Drainage System Model 230 Drainage System Model 260 107 ...

Page 110: ...f LP gas at tank valve I Make sure furnace manual valve and ther mostat are set at OFF range oven burners at OFF oven at PILOT OFF and gas electric refrigerator control at GAS OFF 108 m Add recreational non toxic non flammable antifreeze 1 z cup to the kitchen bathroom and shower drains see page 107 n Tape over drain openings except toilet to prevent evaporation if storage is lengthy 6 months or m...

Page 111: ... car buretor For continuing satisfaction keep your Motor Home all GM General Motors Parts are identified by one of these trademarks GM A D co V 3 Clean exterior of plant then spread a light film of oil on unpainted metal surfaces 4 Remove spark plug and pour a tablespoon of oil S A E 30 into spark plug hole turn engine over several times Spark plug should be reinstalled 5 Service air cleaner 6 Plu...

Page 112: ...s which are warranted separately by the tire manufacturer This warranty covers only repairs made necessary due to defects in material or workmanship The 12 month 12 000 mile warranty period shall begin on the date the Motor Home is delivered to the first retail purchaser or if the Motor Home is first placed in service as a demonstrator or company Motor Home prior to sale at retail on the date the ...

Page 113: ...rimary con cern to GMC Motor Home Service Outlets and GMC Truck Coach Division In the event a warranty matter is not handled to your satis faction the following steps are suggested 1 Discuss the problem with your GMC Motor Home Service Outlet management 2 Contact the GMC Truck Zone Office closest to you as listed in the GMC Motor Home Owner s Manual 3 Contact the Customer Services Manager at the a...

Page 114: ...rranty Service Foreign Countries The GMC Motor Home New Vehicle War ranty set forth in this folder also applies to your Motor Home if you are touring in Continued on next page DELCO ENERGIZER BATTERY If the Delco Energizer in your Motor Home should fail under normal service due to a defect in material or workman ship after the 12 month 12 000 mile New Vehicle Warranty expires but before the Motor ...

Page 115: ...ve to the warranty work performed along with the paid receipts should be given to your GMC Motor Home Service Outlet for review and reimbursement consideration 6 Demonstrators and Company Motor Homes On a GMC Motor Home which has been in Dealer or General Motors service such as a demonstrator driver training or company vehicle the warranty time and mileage limitations are calculated from the date ...

Page 116: ...ormed by an authorized GMC Motor Home Service Outlet or any other qualified service outlet which regularly performs such services Service manuals provid ing greater detail on emission systems are made available for purchases by owners who desire to perform their own vehicle maintenance FOREWORD Receipts covering the performance of regular maintenance should be retained in the plastic en velope pro...

Page 117: ...re action but it is toxic at high concentrations and thus has been controlled to prevent high atmos pheric concentrations GASOLINE IMPROVEMENTS Another important advancement in air pollution control has been the reduction in lead level or elimination of lead from some grades of gasoline Certain lead compounds have been used for many years as additives to increase octane ratings Use of unleaded or ...

Page 118: ...he engine cooling jacket near the front of the engine and connected into the vacuum advance system When the engine coolant reaches a specified high temperature the valve opens against spring pres sure and directs manifold vacuum to the advance mechanism This advances the spark timing slightly and speeds up the engine The result is less heat rejected to the coolant together with higher fan speeds f...

Page 119: ... does not cover 1 Malfunctions resulting from misuse negligence alteration formance of required maintenance services 2 The replacement of expendable maintenance items which are spark plugs ignition points positive crankcase ventilation valve filters hoses belts wires and coolant made in connection with required emission control maintenance services 3 Loss of time inconvenience loss of use of the M...

Page 120: ...0 23 06 260 26 ASSY PLANT CODE V Pontiac MOTOR HOME DIMENSIONS Track Front 75 28 in Rear 82 12 in Wheelbase Model 230 140 in Model 260 160 in in in in in Width 96 in Height 8 ft 1 in With Roof Air Conditioner 9 ft 2 in Front Overhang All Models 42 in Rear Overhang Model 230 69 in Model 260 89 in Interior Ceiling Height 76 in Length Including optional spare tire Model 230 23 ft 9 Model 260 26 ft 9 ...

Page 121: ...0 in Firing Order 1 8 4 3 6 5 7 2 Dwell 30 Timing 8 BTDC 1100 RPM Slow Idle Screw 600 RPM in Drive Fast Idle Screw 1100 RPM in P or N Spark Plugs AC R45S Spark Plug Gap 040 in Valve Lash Hydraulic Idle Mixture Do Not Remove Caps Fuel Requirements Use 91 Octane or Higher BATTERIES MISCELLANEOUS 120 E5000 R91 Rated 3350 Watts 0 F E3000 Y87 Rated 2300 Watts 0 F Radiator Cap pressure opening 9 PSI AC ...

Page 122: ...mber Degrees R H 1 4 3 4 L H 1 4 3 4 Toe In Inches 0 1 a ONAN MOTOR GENERATOR 6000 WATT 50 AMP Bore in Stroke 3 in Oil Capacity 3 Qt With Filter Change 3 1 2 Qt Spark Plug Type AC R46S Spark Plug Gap 025 in Breaker Point Gap 020 in Ignition Timing 21 BTDC Tappet Adjustment Engine Cold Intake 003 in Exhaust 010 in ONAN MOTOR GENERATOR 4000 WATT 33 AMP Bore 3 1 s in Stroke in Oil Capacity 3 Qt With ...

Page 123: ...or property damage may result 122 Name on Usage Fuse Block Fuse Type Auxiliary Battery Switch Radio Aux Bat Radio AGC 10 Tape Player Heater Controls Htr A C AGC 2 5 Air Conditioner Side Marker Lights I D 8v Clearance Lights Tail Lights Tail Dome SFE 20A Dome Lights License Light Stop Lights Hazard Warning Lights Dir Sig Haz Stop SFE 20A Turn Signal Lights Windshield Washers Washer AGC 10 Cigar Cig...

Page 124: ...r In Fuse Block LIVING AREA 12 VOLT SYSTEM FUSES The following are located in the fuse block in the living area electrical compartment near the hall closet Do not use fuses of higher amperage rating than those specified below or damage may result 123 No on Fuse Usage Fuse Block Type L H Dinette Light R H Reading Light No 1 AGC 15 Bath Light L H Reading Light Porch Light Hall Light No 2 AGC 10 R H ...

Page 125: ...nt Cluster Lights 2 194 Speedo Cluster Lights 2 194 Dome Lights 2 211 Radio Dial AM FM Stereo Tape 1 566 Radio Dial Exc AM FM Stereo Tape 1 1893 Heater Control 1 1895 R H Dinette Light 2 1141 L H Dinette Light 2 1141 Kitchen Light 2 1141 Hall Light 2 1141 Porch Light 1 1141 Compartment Lights 5 1141 Range Hood Lights 2 1156 Rear Compartment Reading Lights 2 1383 Bathroom Lights 6 93 Aisle Lights 3...

Page 126: ... Amp Hall Light 2 88 Amp R H Reading Light 1 50 Amp L H Reading Light 1 50 Amp Kitchen Light 1 44 Amp Aisle Lights Per Light 59 Amp Compartment Lights Per Light 59 Amp Porch Light 59 Amp Step Light 59 Amp Bath Room Lights 5 64 Amps Range Hood Vent Fan and Lights 5 50 Amps Furnace Blower 6 1 Amp Water Pump 6 2 Amp Refrigerator 6 0 Amp Recirculating Toilet 4 8 Amp Monitor Panel 2 5 Amp Front Vent Fa...

Page 127: ...olved by the service outlet without additional assistance the matter should be called to the attention of the Zone s Owner Relations Depart ment and the following information provided Your name address telephone number Year and model vehicle Service Outlet s name and location Vehicle s delivery date and mileage STEP THREE Contact the Owner Relations Manager GMC Truck Coach Division 660 South Blvd ...

Page 128: ...otor Company Marietta Georgia Larry Hopkins Pontiac 404 427 5545 Sunnyvale California 415 736 5474 ILLINOIS Reynolds Buick Inc Benhart s GMC Inc West Covina California Glen Ellyn Illinois 213 966 4461 312 665 3140 Mission Valley Truck Sales Inc Community Motors Inc San Diego California Oak Forest Illinois 714 283 7222 312 687 0400 Service Oldsmobile GMC Inc Long Beach California INDIANA 213 531 24...

Page 129: ...I Ackerman Buick Inc St Louis Missouri 314 524 2900 NEBRASKA McKenzie Pontiac Inc Omaha Nebraska 402 344 4400 12 9 NEW JERSEY Maxon Pontiac Inc Union N J 201 964 1600 NEW YORK Jim Culligan Pontiac Inc Williamsville N Y 716 633 4000 McNamara Travel Homes Port Jefferson Station N Y 516 473 0263 NORTH CAROLINA Bill Beck Pontiac Inc Charlotte N C 704 536 1234 OHIO Geo Byers Sons Inc Columbus Ohio 614 ...

Page 130: ...ty Buick Company Inc 703 353 1277 Memphis Tennessee 901 744 0150 Phillips Oldsmobile Inc Virginia Beach Virginia General Truck Sales 703 499 3771 Nashville Tennessee 615 244 5400 WASHINGTON TEXAS U S MOTOR HOME SERVICE OUTLET LOCATIONS Burke Oldsmobile Co San Antonio Texas 512 824 0411 TEXAS Con t Frank Gillman Pontiac Inc Houston Texas 713 771 3611 GMC Quality Trucks Inc El Paso Texas 915 778 643...

Page 131: ...U S ZONE TERRITORIES Y at Z Y ...

Page 132: ...te 1030 Panorama Towers Panorama City Calif 91402 873 7554 Area Code 213 MEMPHIS 670 E Huron St Box 7355 North Station Memphis Tennessee 38107 525 2481 Area Code 901 MINNEAPOLIS 3001 Broadway N E Minneapolis Minn 55413 331 4282 Area Code 612 NEW YORK 780 Dowd Avenue Elizabeth N J 07207 354 8200 Area Code 201 MEXICO ZONE OFFICE 132 OAKLAND 10626 E 14th Street Oakland Calif 94603 568 7510 Area Code ...

Page 133: ...7 Y no c H d 7 ml1 T N tp d Z C W h O O N D_ C C 1A O O O C O m N K N O 7m 00 G C fr C O C O Q m amu n K W U O z Q Q Z Ld O W L cD Z O Z Z J 0 _ Z Z O O J N U m O 0 O O W Lo u o Lo o v a r c c n c 2 V a M N O CD lf 00 W O O U cD C _M D V_ 1f D O W Q Q A W V d 3 O y d v o N C C O o d C m U1 d m o q C NO N N dZ N N W uj 0 O w _ 71 m N 3 C U f y OC C7 c O i O C O N O Q D neo s O O O n O a M C to comO...

Page 134: ...ice outlet after normal business hours without success you may call toll free the number below The operator will give you the location and phone number of the nearest outlet that provides after hour assistance 800 521 2806 In Michigan call 800 572 7959 It should be understood however that any charges for after hours service assistance must be borne by the owner In those instances where the repair ...

Page 135: ... Driving Your Motor Home 5 Belts Lap 8 60 69 Blower Ventilating 24 Body Identification Number 119 INDEX 135 SUBJECT PAGE NO Brakes Linings 19 Master Cylinder Level 79 Parking Brake 19 Power 17 Self Adjusting 18 Trailer 10 Warning Light 21 Break In Period New Vehicle 11 Vehicle Pulling Trailer 10 Bright Metal Cleaning 61 B T U Ratings 120 Bulbs and Fuses 122 124 Bumpers Energy Absorbing 3 Bunk Beds...

Page 136: ...rgency In Case Of 53 Brake System Warning Light 21 Charging System Warning Light 21 Emergency Starting 53 Hazard Warning Flasher 53 Jacking Instructions 55 Jump Starting 54 Overheated Engine 55 Power Level System 28 Pushing to Start 53 Towing 56 Emission Control Maintenance 71 Emission Control Systems Warranty 118 Capacity 120 Change Interval 68 75 Dip Stick 77 Filter 75 Pressure Gauge 21 Recommen...

Page 137: ...mergency 53 Indicator Lights 20 Infant Restraining Methods 9 Inflation Pressure Tire 96 Instrument Panel 20 Interior Appearance Care 59 J Jack Usage Instructions 55 Jump Starting 54 K Keys 7 Kitchen Facilities 37 Power Range Hood 40 Range Oven 40 Refrigerator 37 Sink 43 Water Purifier 43 Knocking Engine 81 Kohler Motor Generator 32 L Lane Change and Turn Signal 16 Lap Belts 8 9 Latch Door 7 Leveli...

Page 138: ...e Break In 10 11 New Vehicle Warranty 111 Odometer 20 Oil Additives 75 Change Interval Engine 68 Checking Engine Oil Level 75 Filter 75 13 8 SUBJECT PAGE NO Motor Generator 91 95 Pressure Gauge 21 Recommendations 75 Transmission 77 Viscosity 75 Onan Motor Generator 31 Operation in Foreign Countries 9 Oven Operation 40 Overheated Engine Temperature Gauge 21 What To Do 21 Owner Assistance 127 Owner ...

Page 139: ...ter 108 Sudden Service 134 Suspension Front 99 Rear 100 Swivel Seats 51 T Tape System Stereo 26 Tell Tale Lights 22 Temperature Control Cooling and Heating 23 Gauge 21 Thermasan 46 46 101 Thermostat Inflation Pressure 96 Inspection 98 Load Limit 97 Replacement 97 Rotation 98 Snow 98 Traction 97 Tread Wear 98 SUBJECT PAGE NO SUBJECT PAGE NO Refilling Spot Cleaner 59 L P Gas Tank 84 Stains Removal O...

Page 140: ...olatile Cleaning Solvents Caution 59 W Warning Flasher Hazard 53 Warning Lights Brake 21 Charging System 21 Cluster 22 Low Fuel 22 SUBJECT PAGE NO Warranty Emission Control Systems 118 New Vehicle 111 Washers Windshield 23 Washing 61 Waste Destruction System 46 Water External Connection 35 Heater 36 Pump 35 Purifier 43 System 33 Tank 35 Waxing 62 Weight Distribution 1 Wheel Alignment 122 Wheel Bea...

Page 141: ...ith the same features should be used Failure to use the correct cap can result in a serious malfunction of the system Correct replacement caps may be obtained from your GMC Motor Home service outlet GASOLINE RECOMMENDATION Use an unleaded or low lead fuel of approximately 91 Research Octane Number or higher as commonly sold in the U S and Canada FRONT ACCESS DOORS Release by turning latch knob to ...

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