GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Bumpers

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REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5, 6 and 7

Front
  1. Raise the vehicle and support with jackstands.
  2.  
  3. Disconnect the parking lamp connectors.
  4.  
  5. With the aid of an assistant, remove the eight bumper reinforcement-to-energy absorber nuts and remove the bumper. Note the size and position of the shims if used.
  6.  

To install:
  1. With an assistant, install the bumper shims and nuts only hand tight.
  2.  
  3. Move the bumper from side to side to gain sideward adjustment. Add or subtract shims to gain in or out adjustment. Torque the retaining nuts to 18 ft. lbs. (24 Nm).
  4.  
  5. Connect the parking lamp wires and lower the vehicle.
  6.  



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Fig. Fig. 1: Front bumper assembly, all models similar



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Fig. Fig. 2: Buick front bumper alignment



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Fig. Fig. 3: Oldsmobile front bumper alignment



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Fig. Fig. 4: Pontiac front bumper alignment

Rear
  1. Raise the vehicle and support with jackstands.
  2.  
  3. Disconnect the license plate lamp connectors.
  4.  
  5. With the aid of an assistant, remove the eight bumper reinforcement-to-energy absorber nuts and remove the bumper. Note the size and position of the shims if used.
  6.  

To install:
  1. With an assistant, install the bumper shims and nuts only hand tight.
  2.  
  3. Move the bumper from side to side to gain sideward adjustment. Add or subtract shims to gain in or out adjustment. Torque the retaining nuts to 18 ft. lbs. (24 Nm).
  4.  
  5. Connect the license plate lamp wires and lower the vehicle.
  6.  



Click image to see an enlarged view

Fig. Fig. 5: Rear bumper assembly, all models similar



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Fig. Fig. 6: Sedan rear bumper alignment



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Fig. Fig. 7: Station wagon rear bumper alignment

 
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