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Installation Instructions

 

 15 GMC HD Premium Front Bumper 

Product Number: C3150, C3151, C3152 

Application: 2015-2019 GMC HD 

 

Copyright 2008 Fab Fours, Inc. 

Page 1 of 21 

C315X_REV_A

 

        

 

SAFETY 

 

Your safety and the safety of others is very important. 

 

In order to help you make informed decisions about safety, we have provided 
installation instructions and other information.  

 

These instructions alert you to potential injury hazards.  

 

Please do a job safety analysis before each task to identify potential hazards for 
your situation and remove/protect against them. 

 

You must use your own good judgment. 

 

Read and understand all safety precautions and instructions before installing 
this product.

 

 

 

THIS PRODUCT IS FOR OFFROAD USE ONLY.  ALL LIABILITY FOR 

INSTALLATION AND USE RESTS WITH THE OWNER. 

 

CARELESS INSTALLATION AND OPERATION CAN RESULT IN SERIOUS 

INJURY OR EQUIPMENT DAMAGE. 

 

SENSORS FIELD OF VIEW WILL BE ALTERED WITH USE OF THE 

REPLACEMENT BUMPER

 

Injury hazard 

 

Failure to observe these instructions could lead to severe injury or death. 

 

 

Always remove jewelry and wear eye protection. 

 

Always use extreme caution when jacking up a vehicle for work. Set 
emergency brake and use tire blocks.  Locate and use the vehicle 
manufacturers designated lifting points.  Use jack stands. 

 

Always use appropriate and adequate care in lifting components into place. 

 

Always ensure components will remain secure during installation and 
operation. 

 

Always wear safety glasses when installing this kit.  A drilling operation will 
cause flying metal chips.  Flying chips can cause serious eye injury. 

 

Always use extreme caution when drilling on a vehicle.  Thoroughly inspect 
the area to be drilled (on both sides of material) prior to drilling, and 
relocate any objects that may be damaged. 

 

Always use extreme caution when cutting and trimming during fitting. 

 

Always tighten all nuts and bolts securely per installation instructions. 

 

Always route electrical cables carefully.  Avoid moving parts, components 
that become hot and rough or sharp edges. 

 

Always insulate and protect all exposed wiring and electrical terminals. 

 

Always perform regular inspections and maintenance on mounts and 
related hardware. 

Summary of Contents for C3150

Page 1: ...nstructions could lead to severe injury or death Always remove jewelry and wear eye protection Always use extreme caution when jacking up a vehicle for work Set emergency brake and use tire blocks Locate and use the vehicle manufacturers designated lifting points Use jack stands Always use appropriate and adequate care in lifting components into place Always ensure components will remain secure du...

Page 2: ...atulations on your new purchase of the industries best and most stylish front bumper available for the 2015 GMC Heavy Duty This bumper has been engineered for strength while keeping the weight down Your front bumper is designed in 3D from digitized data CNC laser cut fabricated and powder coated all in the U S A Enjoy the fit and finish of a quality GMC HD Front Bumper from Fab Fours Inc ...

Page 3: ...l Tools Required Socket Wrench with Extension Ratcheting wrenches may also be convenient 7mm 10mm 15mm 18mm 19mm 3 4 Sockets and Box End Wrenches Flat head screw drivers Floor jack jack stands and or a wood block 9 16 drill bit w drill II Removal of OEM Bumper Note Save all OEM parts until installation is complete A Open hood and locate the twelve push pins on radiator cover Using a flat head scre...

Page 4: ... Page 4 of 21 C315X_REV_A B Remove the fasteners connecting the grill to the frame with a 10mm socket Four bolts are located at the top of the grill two on each side Ref Figure 2a b There are multiple clips holding the grill to the vehicle Figure 2a bolts on LH side Figure 2b grill removed bolt locations RH Figure 2c example of clip holding grill ...

Page 5: ...icle and remove tow hooks Tow hooks are mounted with one cross bolt through the side and a bolt through the bottom of the frame Ref Figure 3b Figure 3a TOW HOOK OEM MOUNTING BRACKET D Remove bolts connecting bumper to mounting bracket Ref Figure 3a circles There are two bolts on each side which require a socket wrench with an extension to easily reach from top and bottom Ref Figure 3a b Carefully ...

Page 6: ...ng bracket to the frame Using a socket wrench remove four bolts from the front of bracket connected to the bumper Repeat process on each side of vehicle F Remove OEM electrical harness from bumper Disconnect harness from fog lights and sensors Pop out the three plastic clips holding fog lights to fog light housing and carefully pull away The plastic clips are indicated by a circle Unbolt bumper su...

Page 7: ...g the plastic clip indicated by the red square ref Figure 8a Figure 8 H CAREFULLY remove sensors from plastic housing by gently pulling the top and bottom tabs indicated by blue circles Ref Figure 8a away as sensor is pulled out Do not push on front of sensor as this will damage the membrane Place sensors face up in a safe location I Remove plastic housing from OEM bumper by depressing the four pl...

Page 8: ...Place sensor housing in Fab Four bumper replicating the orientation seen in the images below The housings should slide in freely and not be forced as this may compress sensor and cause false readings after installation After assuring sensors work in current orientation epoxy should be applied to the housing on inside of bumper and allowed to dry C For sensor installation run sensor harness under w...

Page 9: ...Installation Instructions 15 GMC HD Premium Front Bumper Product Number C3150 C3151 C3152 Application 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 9 of 21 C315X_REV_A ...

Page 10: ...r Product Number C3150 C3151 C3152 Application 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 10 of 21 C315X_REV_A Install the provided Fab Fours fog lights using the provided hardware kit The wiring diagram for the fog lights can be found in section V ...

Page 11: ...rs have been installed Follow the winch manufacturer s instructions for installation IV Front Bumper Installation A Mount bracket to truck frame Two bolts pass through the sides of the frame One bolt passes through the bottom of the frame Ref 8a b Mount on both sides If holes on the side of frame are out of tolerance then enlarge hole with 9 16 drill as needed on side of frame Figure 8a Figure 8b ...

Page 12: ...f the bumper lift the Fab Fours bumper into place C Insert the bolt strips from the inside facing out and tighten Do Not Fully Tighten Hand Tighten Only D Align the bumper side to side and top to bottom to ensure a perfect fit to the truck Allow clearance to all painted surfaces this is to allow for frame flex E Fully tighten all fasteners between bumper and bracket F Enjoy your New Front Replacem...

Page 13: ... a 10mm wrench remove the 4 bolts attaching the grill and remove grill by pulling forward 4 After removing the grill remove the front 10mm bolt and two 7mm bolts located on the inside and outside of the wheel arch Remove under headlight trim 5 Remove the remaining 10mm bolts on the top of the headlight pod and two bolts on the front of the pod that are now exposed Headlight should now slide forwar...

Page 14: ...E TURN FAB FOURS FOG LIGHT WIRING WHITE WIRE GROUND BLACK WIRE POWER Note For customers that are going from LED to our LED lights you should not need to use the provided resistors For customers that are going from Halogen to our LED lights then you may need to use the provided resistors on our turn indicators please wire the resistors between your power and ground wire Use a multi meter or test li...

Page 15: ...ight and wires and fog light turn signal wires 9 Reattach headlight pods to truck 10 Install turn indicators into the plastic light insert using three self tapping screws as shown below Figure 12a 11 Install the light inserts with turn indicators into the cutout in the bumper Use the length stainless steel button head washers and hex nuts to fasten the insert through the holes shown below ...

Page 16: ...ct Number C3150 C3151 C3152 Application 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 16 of 21 C315X_REV_A Figure 13a 12 Install the Fab Fours fog lights into the mounting brackets as shown below using the 8 button head screws washers and hex nuts Figure 14a ...

Page 17: ... fog light and bracket into the bumper using the remaining two holes 14 14 Install turn indicators into the plastic light insert using three self tapping screws as shown below Figure 12a 15 Install the light inserts with turn indicators into the cutout in the bumper Use the length stainless steel button head washers and hex nuts to fasten the insert through the holes shown below Figure 13a ...

Page 18: ...ion 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 18 of 21 C315X_REV_A 16 Install the Fab Fours fog lights into the mounting brackets as shown below using the 8 button head screws washers and hex nuts Figure 14a 17 Install the fog light and bracket into the bumper using the remaining two holes ...

Page 19: ...51 C3152 Application 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 19 of 21 C315X_REV_A VI Maintenance Care Periodically check and tighten all fasteners Stripped fractured or bent bolts or nuts need to be replaced After washing of the vehicle make sure to fully dry all surfaces ...

Page 20: ...n the housing Confirm plastic housing is in the correct mounting holes Misplaced sensor housings could compress sensor and give false readings or faults Use a clean microfiber to wipe the front face of the sensor as dirt or debris can cause issues Inspect connection Be sure that the sensor is firmly seated into the harness Run through several start cycles i e fully turn the vehicle on and off Fina...

Page 21: ...50 C3151 C3152 Application 2015 2019 GMC HD Copyright 2008 Fab Fours Inc Page 21 of 21 C315X_REV_A VII Contact Information Fab Fours Inc Phone 866 385 1905 1312 Camp Creek Rd Fax 866 574 1424 Lancaster SC 29720 Email Support fabfours com More than expected Better than expected ...

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