GM Full-Size Trucks 1988-1998 Repair Information

Shock Absorbers

Print

REMOVAL & INSTALLATION



See Figures 1 and 2

  1. Raise and support the rear end on jackstands.
  2.  
  3. Support the rear axle with a floor jack.
  4.  
  5. If the truck is equipped with air lift shocks, bleed the air from the lines and disconnect the line from the shock absorber.
  6.  
  7. Disconnect the shock absorber at the top by removing the retainers and washers.
  8.  
  9. Remove the nut, washers and bolt from the bottom mount.
  10.  
  11. Remove the shock from the truck.
  12.  



Click image to see an enlarged view

Fig. Fig. 1: Remove the nut, washers and bolt from the bottom mount

To install:
  1. Install the shocks onto the vehicle.
  2.  
  3. On R/V series, tighten the upper mount to 140 ft. lbs. (190 Nm) on 10/15 and 20/25 Series, or 52 ft. lbs. (70 Nm) on 30/35 Series; the lower to 115 ft. lbs. (160 Nm) on all series.
  4.  
  5. On C/K series except C3HD models, tighten the upper mounting nuts as follows:

    1988-95 models: 17-20 ft. lbs. (25-27 Nm)
     
    1996-98 models: 13 ft. lbs. (17 Nm)
     

  6.  
  7. On C/K series except C3HD models, tighten the lower mounting nuts as follows:

    1988-91 models: 52 ft. lbs. (70 Nm)
     
    1992-95 models: 81 ft. lbs. (110 Nm)
     
    1996-98 models: 74 ft. lbs. (100 Nm)
     

  8.  
  9. On C/K series C3HD models, tighten the lower mounting nuts as follows:

    1988-91 models: 52 ft. lbs. (70 Nm)
     
    1992-95 models: 81 ft. lbs. (110 Nm)
     
    1996-98 models: 52 ft. lbs. (70 Nm)
     

  10.  
  11. On C/K series C3HD models, tighten the upper mounting nuts as follows:

    1988-91 models:17 ft. lbs. (25 Nm)
     
    1992-95 models: 17-20 ft. lbs. (25-27 Nm)
     
    1996-98 models: 11 ft. lbs. (15 Nm)
     

  12.  



Click image to see an enlarged view

Fig. Fig. 2: Installing the rear shock absorber-C/K Series

TESTING



Refer to the shock absorber testing procedure in the R/C series front suspension portion of the section.

 
label.common.footer.alt.autozoneLogo