![background image](http://html1.mh-extra.com/html/gmc/1982-light-duty-truck/1982-light-duty-truck_service-manual_2235920835.webp)
CARBURETOR MODEL M 4M E /M 4M C
6 C 4 -15
5. C h e c k a i r v a l v e s f o r b i n d s a n d d a m a g e . I f a i r v a l v e
is d a m a g e d , t h e a i r h o r n a s s e m b l y m u s t b e
r e p l a c e d . A t o r s i o n s p r i n g k i t is a v a i l a b l e f o r
r e p a i r s t o a i r v a l v e c l o s i n g s p r i n g . A n e w p l a s t i c
s e c o n d a r y m e t e r i n g r o d c a m is i n c l u d e d in t h e k i t.
e.
Rough Idle
1. I n s p e c t g a s k e t m a t i n g s u r f a c e s o n c a s t i n g s f o r
d a m a g e t o s e a l i n g b e a d s , n i c k s , b u r r s a n d o t h e r
d a m a g e .
2. C l e a n a l l i d l e f u e l p a s s a g e s .
3. I f r e m o v e d , i n s p e c t i d l e m i x t u r e n e e d l e s f o r r i d g e s ,
b u r r s , o r b e i n g b e n t .
4. C h e c k t h r o t t l e l e v e r a n d v a l v e s f o r b i n d s , n i c k s ,
a n d o t h e r d a m a g e .
5. C h e c k a ll d i a p h r a g m s f o r p o s s i b l e r u p t u r e s o r l e a k s .
6. C l e a n p l a s t i c p a r t s o n l y in c l e a n i n g s o l v e n t - n e v e r in
g a s o l i n e .
C H E C K FUEL LINES A N D SER VIC E FUEL FILTER
1. I n s p e c t f u e l l i n e s f o r k i n k s , b e n d s , o r l e a k s a n d c o r r e c t
a n y d e f e c t s f o u n d .
2. R e p l a c e f i l t e r i n c a r b u r e t o r i n l e t , m a k i n g s u r e t y p e
u s e d i n c l u d e s t h e c h e c k v a l v e in t h e f i l t e r i n l e t .
I f a c o m p l a i n t o f p o o r h i g h s p e e d p e r f o r m a n c e e x i s t s o n
t h e v e h i c l e , f u e l p u m p t e s t s s h o u l d b e p e r f o r m e d .
AS SEM B LY
T h ro ttle Body
1. I n s t a l l l o w e r e n d o f p u m p r o d in t h r o t t l e l e v e r b y
a l i g n i n g t a n g o n r o d w i t h s l o t in l e v e r . E n d o f r o d
s h o u l d p o i n t o u t w a r d t o w a r d t h r o t t l e le v e r .
2. I f r e m o v e d , i n s t a l l i d l e m i x t u r e n e e d l e , w a s h e r , a n d
s p r i n g u s i n g T o o l J - 2 9 0 3 0 . L i g h t l y s e a t n e e d l e a n d t h e n
b a c k o u t 4 - 1 / 2 t u r n s a s a p r e l i m i n a r y i d le m i x t u r e
a d j u s t m e n t . F i n a l i d le m i x t u r e a d j u s t m e n t m u s t b e o n
t h e e n g i n e u s i n g t h e p r o c e d u r e s d e s c r i b e d u n d e r " O n -
V e h i c l e S e r v i c e "
F lo at B o w l A s s e m b ly
I f a n e w f l o a t b o w l a s s e m b l y is u s e d , s t a m p o r e n g r a v e
t h e m o d e l n u m b e r o n t h e n e w f l o a t b o w l ( F i g . 6 C 4 - 1 ).
1. I n s t a l l n e w t h r o t t l e b o d y t o b o w l g a s k e t o v e r t w o
l o c a t i n g d o w e l s o n b o w l . 2 . ? I n s t a l l t h r o t t l e b o d y
m a k i n g c e r t a i n t h r o t t l e b o d y is p r o p e r l y l o c a t e d o v e r
d o w e l s o n f l o a t b o w l , t h e n i n s t a l l t h r o t t l e b o d y t o b o w l
s c r e w s a n d t i g h t e n e v e n l y a n d s e c u r e l y ( F i g . 6 C 4 - 2 1 ) .
3 . ? P l a c e c a r b u r e t o r o n p r o p e r h o l d i n g f i x t u r e J 9 7 8 9 -
1 1 8 o r e q u i v a l e n t . 4 . ? I n s t a l l f u e l i n l e t f i l t e r s p r i n g ,
fi lt e r , n e w g a s k e t a n d i n l e t n u t a n d t i g h t e n n u t t o 2 4
N - m ( 1 8 ft. l b s . ) .
W h e n i n s t a l l i n g a s e r v i c e r e p l a c e m e n t f i lt e r , m a k e s u r e
t h e f i lt e r is t h e t y p e t h a t i n c l u d e s t h e c h e c k v a l v e t o m e e t
s a f e t y s t a n d a r d s f o r v e h i c l e r o l l - o v e r . W h e n p r o p e r l y
i n s t a l l e d , h o l e in f i l t e r f a c e s t o w a r d i n l e t n u t . R i b s o n c l o s e d
e n d o f f i l t e r e l e m e n t p r e v e n t f i l t e r f r o m b e i n g i n s t a l l e d
i n c o r r e c t l y u n l e s s f o r c e d . T i g h t e n i n g b e y o n d s p e c i f i e d
t o r q u e c a n d a m a g e i n l e t n u t g a s k e t t o c a u s e f u e l l e a k .
C h o k e H o using
1. I n s t a l l n e w c u p s e a l i n t o i n s e r t o n s i d e o f f l o a t b o w l f o r
i n t e r m e d i a t e c h o k e s h a f t . L i p o n c u p s e a l f a c e s o u t w a r d
( F i g . 6 C 4 - 2 0 ) .
2. I n s t a l l s e c o n d a r y t h r o t t l e v a l v e l o c k - o u t l e v e r o n b o s s
o n f l o a t b o w l w i t h r e c e s s in h o l e in l e v e r f a c i n g i n w a r d
( F i g . 6 C 4 - 2 0 ) .
3. I n s t a l l n e w c u p s e a l i n t o c h o k e s h a f t h o l e ( h o t a i r c h o k e
m o d e l ) L i p s o n s e a l f a c e i n w a r d t o w a r d f l o a t b o w l .
4. I n s t a l l f a s t i d l e c a m o n t o t h e i n t e r m e d i a t e c h o k e s h a f t
( s t e p s o n f a s t i d l e c a m f a c e d o w n w a r d ) a n d i n s t a l l
i n t e r m e d i a t e c h o k e s h a f t in c h o k e h o u s i n g p u s h i n g
s h a f t t h r o u g h s e a l in h o u s i n g .
5. I n s t a l l c h o k e c o il l e v e r o n f l a t s o n i n t e r m e d i a t e c h o k e
s h a f t , i n s t a l l r e t a i n i n g s c r e w , a n d t i g h t e n s e c u r e l y ( F i g .
6 C 4 - 2 0 ) . L e v e r is p r o p e r l y a l i g n e d w h e n b o t h i n s i d e
a n d o u t s i d e l e v e r s f a c e t o w a r d f u e l i n l e t .
6. I f u s e d , i n s t a l l r e a r v a c u u m b r e a k l i n k in h o l e in
i n t e r m e d i a t e c h o k e s h a f t l e v e r . E n d o f l i n k f a c e s
t o w a r d c h o k e h o u s i n g w h e n i n s t a l l e d p r o p e r l y .
7. O n h o t a i r c h o k e m o d e l s , i n s e r t p l a s t i c t u b e s e a l ( t o
f l o a t b o w l ) in v a c u u m i n l e t h o l e o n c h o k e h o u s i n g ( F i g .
6 C 4 - 2 0 ) .
8. I n s t a l l l o w e r ( i n n e r ) c h o k e l e v e r in c a v i t y i n f l o a t b o w l
u s i n g T o o l J - 2 3 4 1 7 o r e q u i v a l e n t ( F i g . 6 C 4 - 2 3 ) . I n s t a l l
c h o k e h o u s i n g t o b o w l s l i d i n g i n t e r m e d i a t e c h o k e s h a f t
t h r o u g h b o w l s e a l a n d i n t o l o w e r ( i n n e r ) c h o k e l e v e r .
T h e i n t e r m e d i a t e c h o k e s h a f t l e v e r a n d f a s t i d l e c a m
a r e in c o r r e c t p o s i t i o n w h e n t h e t a n g o n l e v e r is b e n e a t h
t h e f a s t i d l e c a m .
8. I n s t a l l c h o k e h o u s i n g r e t a i n i n g s c r e w a n d w a s h e r ( F i g .
6 C 4 - 2 0 ) a n d t i g h t e n s e c u r e l y . C h e c k l i n k a g e f o r
f r e e d o m o f m o v e m e n t .
D o n o t i n s t a l l t h e c h o k e c o v e r a n d c o il a s s e m b l y o n
h o u s i n g u n t i l c o m p l e t i o n o f a d j u s t m e n t s ( s t a r t i n g a t
F i g u r e 6 C 4 - 2 9 ) .
Summary of Contents for 1982 Light Duty Truck
Page 1: ......
Page 28: ...HEATER 1A 3 Fig lA 2 Heater Control C K Models Fig lA 3 Heater Control G Models...
Page 37: ...Fig 1A 11 T E E V A L V E A S M TEE AND VALVE C36...
Page 38: ...HEATER 1A 13 Fig 1A l2 Distributor Ducts G Models Fig 1A l5 Control Assembly G Models...
Page 39: ...1A 14 HEATER V IE W A V IE W B Fig 1A l7 Control Cable Routing G Models...
Page 42: ...HEATER 1A 19 Fig 1A 23 Auxiliary Heater Hose Routing...
Page 56: ...AIR CONDITIONING IB 13 Chart 1B 4 Pressure Cycling CCOT System Diagnosis...
Page 64: ...Fig 1B 17 C60 System Vacuum Diagram C K Series...
Page 65: ......
Page 66: ...Fig 1B 19 C60 Motor Home Chassis Wiring Diagram SWITCH AIR CONDITIONING IB 2 3...
Page 67: ...IB 24 AIR CONDITIONING Fig IB 20 1 P A C Harness Wiring...
Page 68: ...AIR CONDITIONING IB 25 VIE W A Fig IB 21 A C Compressor wiring...
Page 76: ...AIR CONDITIONING IB 33 Fig 1B 26 Compressor Mounting...
Page 91: ...IB 48 AIR CONDITIONING Fig 1B 59 C K Models Refrigerant Lines L6...
Page 150: ......
Page 162: ......
Page 164: ...2D 2 BODY Fig 2D 4 Typical Utility Vehicle Model...
Page 182: ...2D 20 BODY Fig 2D 51 Rear Door Controls Fig 2D 52 Rear Door Outside Handle and Lock Cylinder...
Page 193: ...BODY 2D 31 BELTS 3RD SEAT Fig 2D 82 Seat Belt Installation Suburban Driver Seat Suburban...
Page 194: ...2D 32 BODY Fig 2D 85 Passenger s Bucket Seat Chassis Cab...
Page 195: ...BODY 2D 33 Fig 2D 88 Rear Bench Seats Suburban...
Page 196: ...2D 34 BODY Fig 2D 89 CK Utility Seat Attachments...
Page 197: ...BODY 2D 35 Fig 2D 90 Seat Separator Compartment and Door CK Models...
Page 222: ......
Page 223: ...BODY 2D 61 Fig 2D 139 Front Seat Belt Installation...
Page 228: ......
Page 234: ......
Page 252: ...3B2 8 MANUAL STEERING GEAR Fig 3B2 11 Manual Steering Gear Exploded View...
Page 256: ......
Page 273: ...POWER STEERING SYSTEM 3B3 17 with LE3 Engine Exc HC4 LE4 LG9 LF4 LS9 LT9 and JB7 HC4 and JB8...
Page 342: ......
Page 389: ...REAR SUSPENSION 3D 7 Fig 3D 17 Rear Spring Installation C K Models...
Page 428: ...4 B 1 4 REAR AXLE Fig 4B 8 Gear Tooth Nomenclature Fig 4B 9 G ear Tooth Contact Pattern Check...
Page 444: ......
Page 454: ......
Page 468: ...4 B 5 2 REAR AXLE Fig 4B5 2 Rockwell Assembly...
Page 480: ...4 B 5 1 4 REAR AXLE...
Page 482: ...i...
Page 502: ......
Page 520: ......
Page 533: ...Fig 5 5 Front Brake Pipes and Hoses C K Models BRAKES 5 13...
Page 534: ...Fig 5 6 Front Brake Pipes and Hoses G M odels 5 14 B R A K E S...
Page 535: ...Fig 5 7 Front Brake Pipes and Hoses P Models BRAKES 5 15...
Page 536: ...5 16 BRAKES Fig 5 8 Rear Brake Hoses...
Page 538: ...5 18 BRAKES Fig 5 10 Parking Brake System Typical...
Page 539: ...BRAKES 5 19...
Page 570: ...5 50 BRAKES Fig 5 57 Power Steering Hose Routing C K Models...
Page 571: ...BRAKES 5 51 Fig 5 58 Power Steering Hose Routing G Models...
Page 572: ...Fig 5 59 Power Steering H ose Routing P Models 5 52 BRAKES...
Page 577: ...BRAKES 5 57 4 CONT A SECONDARY DIAPHRAGM B SECONDARY POWER 4 CONT C PRIMARY D Fig 5 5A Service...
Page 604: ......
Page 625: ...NOTES ENGINE 6 21...
Page 626: ......
Page 629: ...IN LINE 6 6A1 3 OIL PRESSURE SENDING UNIT Fig 6A1 1 In Line Engine Lubrication...
Page 630: ...6A1 4 IN LINE 6 Fig 6 A l 2 P Series Engine Front Mount...
Page 631: ...IN LINE 6 6A1 5 Fig 6Al 3 P Series Engine Rear Mount Fig 6 A l 4 C Series Engine Rear Mounts...
Page 634: ...6A1 8 IN LINE 6 Fig 6Al 7 K Series Engine Rear Mount...
Page 660: ......
Page 663: ...SMALL BLOCK 6A4 3 Fig 6A4 T Engine Lubrication...
Page 664: ...6A4 4 SMALL BLOCK Fig 6A4 2 Engine Lubrication...
Page 665: ...Fig 6A4 3 P Series Engine Mount Bracket...
Page 667: ...SMALL BLOCK 6A4 7 Fig 6A 4 5 P Series Engine Front Mount...
Page 668: ...6A4 8 SMALL BLOCK...
Page 669: ...SMALL BLOCK 6A4 9 Fig 6A 4 7 K Series Engine Mounts...
Page 670: ...6A4 10 SMALL BLOCK Fig 6A 4 8 C Series Engine Mounts...
Page 703: ...MARK IV 6A5 7 Fig 6A 5 6 P Series Engine Front Mount...
Page 704: ...6A5 8 MARK IV Fig 6 A 5 7 C Series Engine Mounts...
Page 731: ...6 2 DIESEL 6A7 3...
Page 760: ...6B 6 ENGINE COOLING Fig 6B 7 A C and A I R Adjustment...
Page 771: ...ENGINE COOLING 6B 17 Fig 6B 20 Engine O il C o o le r 6 2L Diesel...
Page 784: ......
Page 807: ...CARBURETOR MODEL 2SE 6C2 9 Fig 6C2 6 Typical 2SE Carburetor Assembly...
Page 820: ......
Page 830: ...6C4 10 CARBURETOR MODEL M4ME M4MC 101368 Fig 6C4 12 M 4M C M 4M E Carburetor Exploded View...
Page 848: ......
Page 876: ......
Page 888: ...6D 12 ENGINE ELECTRICAL Fig 6D 6C Generator Mounting Fig 6D 7C Generator Mounting...
Page 919: ...ENGINE ELECTRICAL 6D 43...
Page 934: ...Fig 6D 8E Starter M otor Mounting...
Page 974: ......
Page 1011: ...Figure 350C 25A Neutral Engine Running AUTOMATIC TRANSMISSION 350C 11...
Page 1054: ...Fig 7A 1C 400 Autom atic Transmission Side Cross Section Typical...
Page 1152: ...700 R4 40 AUTOMATIC TRANSMISSION Figure 700 R4 76 Transmission Assembly Exploded View...
Page 1162: ......
Page 1189: ...89MM MANUAL TRANSMISSION 7B3 5 Fig 7 3 4 4 Speed 89mm Exploded View...
Page 1219: ...CLUTCH 7C 5 Fig 7C 6 C K Truck Clutch Controls...
Page 1220: ...Fig 7C 7 G Truck Clutch Controls...
Page 1221: ...CLUTCH 7C 7 Fig 7C 8 P Truck Clutch Controls...
Page 1234: ...7E 2 TRANSFER CASE Fig 7E 1 Model 208 Transfer Case Cross Section...
Page 1252: ...7E 20 TRANSFER CASE Fig 7E 39 Transfer Case Attachment Typical...
Page 1278: ...8A 16 ELECTRICAL BODY AND CHASSIS Fig 8A 11 License Plate Lamps C K Series...
Page 1280: ...8A 18 ELECTRICAL BODY AND CHASSIS VIEW A VIEW B Fig 8A 15 CK Series Rear Lamp W iring...
Page 1281: ...ELECTRICAL BODY AND CHASSIS 8A 19 Fig 8A 16 CK Series Auxiliary W iring...
Page 1290: ...8B 8 ELECTRICAL AND WIRING Fig 8B 13 Seat Belt Reminder System Schematic...
Page 1292: ......
Page 1346: ...8C 54 INSTRUMENT PANEL AND GAGES Fig 8C 46 CK Series W iring 3 of 29...
Page 1351: ...INSTRUMENT PANEL AND GAGES 8C 59 SUBURBAN Fig 8C 51 CK Series W iring 8 of 29...
Page 1364: ...8C 72 INSTRUMENT PANEL AND GAGES Fig 8C 64 CK Series W iring 21 of 29...
Page 1365: ...INSTRUMENT PANEL AND GAGES 8C 73 CAB CRFW CAB CHASSIS Fig 8C 65 CK Series W iring 22 of 29...
Page 1366: ...8C 74 INSTRUMENT PANEL AND GAGES Fig 8C 66 CK Series W iring 23 of 29...
Page 1374: ...8C 82 INSTRUMENT PANEL AND GAGES Fig 8C 74 G Series W iring 2 of 19...
Page 1375: ...INSTRUMENT PANEL AND GAGES 8C 83 Fig 8C 75 G Series W iring 3 of 19...
Page 1376: ...8C 84 INSTRUMENT PANEL AND GAGES Fig 8C 76 G Series W iring 4 of 19...
Page 1379: ...INSTRUMENT PANEL AND GAGES 8C 87 Fig 8C 79 G Series W iring 7 of 19...
Page 1383: ...INSTRUMENT PANEL AND GAGES 8C 91 Fig 8C 83 G Series W iring 11 o f 19...
Page 1384: ...8C 92 INSTRUMENT PANEL AND GAGES BUS BARGWO Fig 8C 84 G Series W iring 12 of 19...
Page 1390: ...8C 98 INSTRUMENT PANEL AND GAGES Fig 8C 90 G Series W iring 18 of 19...
Page 1391: ...INSTRUMENT PANEL AND GAGES 8C 99 Fig 8C 91 G Series W iring 19 of 19...
Page 1392: ...8C 100 INSTRUMENT PANEL AND GAGES Fig 8C 92 P Series W iring 1 of 11...
Page 1393: ...INSTRUMENT PANEL AND GAGES 8C 101 Fig 8C 93 P Series W iring 2 of 11...
Page 1396: ...8C 104 INSTRUMENT PANEL AND GAGES Fig 8C 96 P Series W iring 5 of 11...
Page 1399: ...INSTRUMENT PANEL AND GAGES 8C 107 Fig 8C 99 P Series W iring 8 of 11...
Page 1401: ...INSTRUMENT PANEL AND GAGES 8C 109 START RUN OF LOCK ACC Fig 8C 101 P Series W iring 10 of 11...
Page 1415: ...ACCESSORIES 9 13 RADIO NOISE BLOWER MOTOR Fig 9 6R Radio Diagnosis Chart B...
Page 1416: ...9 14 ACCESSORIES D E A D R A D IO A M R A D IO I Fig 9 7R Radio Diagnosis Chart C...
Page 1417: ...ACCESSORIES 9 15 DEAD RADIO AM FM RADIO Fig 9 8R Radio Diagnosis Chart D...
Page 1435: ...t f l i t 1...