GM S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual

Bumpers

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REMOVAL & INSTALLATION



Front

See Figures 1, 2 and 3

  1. If necessary for better access, raise and support the front of the vehicle safely.
  2.  
  3. If equipped, remove the air dam/deflector retainers and remove the air dam from the vehicle. On some models it may not be necessary to completely remove the air dam. It may be possible only to remove the center (bumper-to-air dam) and left (dam-to-fender or bumper depending on the application) retainers and support the air dam at the center.
  4.  
  5. Remove the brace to bumper nut(s) and bolt(s).
  6.  



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Fig. Fig. 1: Common early model front bumper mounting



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Fig. Fig. 2: Most bumpers are reinforced by braces attached further back on the frame (braces may be unbolted at either end)



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Fig. Fig. 3: Loosen and remove the bumper retainers (it may be easier to remove these than to remove the smooth capscrews on the face of older models)

  1. Disengage the parking lamp connectors and, if equipped, the fog lamp connectors.
  2.  
  3. Support the bumper (usually a friend is most convenient here), then remove the bumper-to-frame retainers.
  4.  
  5. Carefully lower the bumper from the vehicle
  6.  
  7. Installation is the reverse of the removal. Tighten the retaining bolts on early model vehicles to 37 ft. lbs. (50 Nm) and all nuts to 6 ft. lbs. (27 Nm).
  8.  

Rear

See Figures 4, 5, 6 and 7



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Fig. Fig. 4: Early model rear step bumper mounting



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Fig. Fig. 5: Most bumpers are easily removed one the bracket-to-frame retainers are removed



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Fig. Fig. 6: Common early model standard bumper (non-step) mounting



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Fig. Fig. 7: Exploded view of the rear step bumper mounting-MFI-Turbo

  1. If necessary, disconnect the license plate lamp harness.
  2.  
  3. Remove the nuts and bolts retaining the rear bumper brackets to the frame rail. Be sure to support the bumper when loosening and removing the retainers as most bumpers are secured only by these bolts.
  4.  

On some newer vehicles, it may be easier to remove the bracket-to-bumper nuts and bolts and lower the bumper from the vehicle with the brackets still installed on frame. Check under the bumper to see how it is mounted, then make the decision based on ease of service.

  1. On some models one or more additional braces may also secure the rear bumper. If necessary, disconnect the brace from the vehicle or the bumper, as applicable.
  2.  
  3. Carefully lower the bumper from the rear of the truck. If necessary, the bumper brackets may be removed from bumper at this time.
  4.  
  5. Installation is the reverse of the removal. Be sure all brackets and/or braces are properly secured. Most of the brace and bracket retainers should be tightened to 60-70 ft. lbs. (81-95 Nm).
  6.  

 
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