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

Shock Absorbers

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4

  1. Raise the vehicle, and with an open end wrench hold the upper stem of the shock absorber from turning. Remove the upper stem retaining nut, retainer and grommet.
  2.  
  3. Remove the two bolts retaining the lower shock absorber pivot to the lower control arm and then pull the shock out through the bottom of the control arm.
  4.  
  5. With the lower retainer and the rubber grommet in place over the upper stem, install the shock (fully extended) back through the lower control arm.
  6.  
  7. Install the upper grommet, retainer and nut onto the upper stem.
  8.  
  9. Hold the upper stem from turning with an open end wrench and then tighten the retaining nut.
  10.  
  11. Reinstall the retainers on the lower end of the shock.
  12.  



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Fig. Fig. 1: Exploded view of the front shock absorber mounting



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Fig. Fig. 2: Remove the upper stem retaining nut, be sure to hold the stem of the shock absorber with an open end wrench to prevent turning



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Fig. Fig. 3: Remove the two lower retaining bolts



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Fig. Fig. 4: Pull the shock absorber through the lower control arm

TESTING



Visually inspect the shock absorber. If there is evidence of leakage and the shock absorber is covered with oil, the shock has reached the end of its life and should be replaced.

If there is no sign of excessive leakage (a small amount of weeping is normal) bounce the vehicle at one corner by pressing down on the fender or bumper and releasing. When you have the vehicle bouncing as much as you can, release the fender or bumper. The vehicle should stop bouncing after the first rebound. If the bouncing continues past the center point of the bounce more than once, the shock absorbers are worn and should be replaced.

 
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