GM Blazer/Jimmy/Typhoon/Bravada 1983-1993 Repair Guide

Bumpers

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REMOVAL & INSTALLATION



Front
EXCEPT TYPHOON

See Figures 1 and 2

  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 through 1993, 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.  



Click image to see an enlarged view

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



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Fig. Fig. 2: Common late model front bumper mounting

  1. For the Oldsmobile Bravada, remove the grille, parking lamp and fog lamp electrical connectors, the nuts and screws retaining the fascia to the vehicle, then remove the fascia.
  2.  
  3. Remove the brace-to-bumper nut(s) and bolt(s).
  4.  
  5. For the Bravada, remove the push-on retainers and bolts.
  6.  
  7. If not done already, disengage the parking lamp connectors and, if equipped, the fog lamp connectors.
  8.  
  9. Support the bumper (usually an assistant is most helpful here), then remove the bumper-to-frame retainers.
  10.  
  11. Carefully lower the bumper from the vehicle.
  12.  

To install:
  1. Install the bumper to the vehicle and install the bumper-to-frame retainers or push-on retainers and bolts, as applicable. Tighten the retaining bolts on early model vehicles to 37 ft. lbs. (50 Nm) and all nuts to 20 ft. lbs. (27 Nm).
  2.  
  3. For vehicles other than the Bravada, if equipped, engage the fog lamp electrical connectors, then the parking lamp electrical connectors.
  4.  
  5. Install the brace to the bumper with the retainers. Tighten to 20 ft. lbs. (27 Nm).
  6.  
  7. If removed or partially disconnected, install the air dam/deflector using the retaining bolts. Tighten the retainers to 62 inch lbs. (7 Nm).
  8.  
  9. For the Bravada, install the fascia to the bumper with the retaining screws and nuts. Tighten the screws to 89 inch lbs. (10 Nm) and the nuts to 20 ft. lbs. (27 Nm), engage the fog lamp and parking lamp electrical connectors.
  10.  
  11. If the vehicle was raised for access, carefully lower the vehicle.
  12.  

TYPHOON

See Figure 3

  1. Raise and safely support the vehicle.
  2.  
  3. Disconnect the bulb socket from the turn signal/parking lamp assembly.
  4.  
  5. Disengage the fog lamp electrical connectors.
  6.  
  7. Unthread the nuts and washers from the bolts, located on the front of the bumper, retaining the front support.
  8.  



Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the front bumper - Typhoon

  1. Remove the bolts, nuts and washers retaining the front bumper, then remove the bumper.
  2.  

To install:
  1. Install the bumper to the vehicle using the retaining bolts. Make sure that the bolts, located on the front of the bumper, engage the brackets.
  2.  
  3. Install the nuts and washers to the back of the retaining bolts.
  4.  
  5. Engage the fog lamp electrical connector, then connect the bulb socket to the turn signal/parking lamp assembly.
  6.  
  7. Carefully lower the vehicle.
  8.  

Rear

See Figures 4, 5 and 6



Click image to see an enlarged view

Fig. Fig. 4: Common early model standard bumper mounting



Click image to see an enlarged view

Fig. Fig. 5: Late model bumper mounting components



Click image to see an enlarged view

Fig. Fig. 6: Exploded view of the rear step bumper mounting - 1992-93 Typhoon

  1. If necessary, disconnect the license plate lamp harness.
  2.  
  3. On some vehicles, the retainers behind the license plate must be removed for access to the fascia-to-bumper retaining bolts and nuts. Once these retainers are accessible, remove the fascia from the rear bumper.
  4.  
  5. Disengage the electrical connectors, if applicable.
  6.  
  7. 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.
  8.  

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 vehicle. If necessary, the bumper brackets may be removed from the bumper at this time.
  4.  
  5. Installation is the reverse of removal. Be sure all brackets and/or braces are properly secured. For all vehicles except Bravada, the brace and bracket retainers should be tightened to 60-70 ft. lbs. (81-95 Nm). For Bravada, the retainers should be tightened to 20 ft. lbs. (27 Nm).
  6.  

 
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