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

Shock Absorbers

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TESTING



Visually inspect the shock absorber. If there is evidence of leakage and the shock absorber is covered with oil, the shock is defective 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 bumper and releasing it. When you have the truck bouncing as much as you can, release the bumper. The truck 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.

REMOVAL & INSTALLATION



2wd Vehicles

See Figure 1

  1. Raise and support the front of the truck safely using jackstands.
  2.  
  3. Using an open end wrench, hold the shock absorber upper stem from turning, then remove the upper stem retaining nut, the retainer and rubber grommet.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Common front shock absorber mounting - 2wd vehicles

  1. Remove the shock absorber-to-lower control arm retaining bolts and lower the shock absorber assembly from the bottom of the control arm.
  2.  
  3. Inspect and test the shock absorber; replace it, if necessary.
  4.  

To install:
  1. Fully extend the shock absorber stem, then push it up through the lower control arm and spring so that the stem passes through the mounting hole in the upper control arm frame bracket.
  2.  
  3. Install the upper shock absorber nut and tighten to 100 inch lbs. (11 Nm). Be careful not to crush the rubber bushing.
  4.  
  5. Install the shock absorber-to-lower control arm retaining bolts and tighten to 20 ft. lbs. (27 Nm).
  6.  
  7. Remove the jackstands and carefully lower the vehicle.
  8.  

4wd Vehicles

See Figures 2, 3 and 4

  1. Raise and support the front of the truck safely using jackstands.
  2.  
  3. Remove the tire and wheel assembly to ease access.
  4.  
  5. Remove the shock absorber-to-lower control arm nut and bolt (using a backup wrench), then collapse the shock absorber.
  6.  
  7. Remove the upper shock absorber-to-frame nut and bolt (again, using a backup wrench).
  8.  
  9. Inspect and test the shock absorber; replace it, if necessary.
  10.  

To install:
  1. Position the shock absorber to the mounting brackets.
  2.  
  3. Install the upper and lower retaining bolts (inserted from the front of the vehicle).
  4.  
  5. Install the retaining nuts to the bolts, then torque the retainers to 54 ft. lbs. (73 Nm).
  6.  
  7. Install the tire and wheel assembly, then remove the jackstands and carefully lower the vehicle.
  8.  



Click image to see an enlarged view

Fig. Fig. 2: Shock absorber assembly - late model 4wd shown



Click image to see an enlarged view

Fig. Fig. 3: Loosen and remove the shock absorber lower mounting bolt



Click image to see an enlarged view

Fig. Fig. 4: Then loosen the upper mounting bolt and remove the shock from the vehicle

 
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