GM Full-Size Trucks 1988-1998 Repair Information

Leaf Spring

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REMOVAL & INSTALLATION



See Figures 1 and 2

  1. Raise the truck and support the axle with safety stands. Remove the tire.
  2.  
  3. Disconnect the lower shock absorber mount at the axle.
  4.  
  5. Disconnect the stabilizer bar link from the bar. Remove the nut, washer and insulator and pull the link from the axle-don't lose the other insulator and retainer.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Leaf spring mounting-C3HD suspension



Click image to see an enlarged view

Fig. Fig. 2: Tighten the stabilizer link to this dimension-C3HD suspension

  1. Remove the nuts and washers and lift out the U-bolts and spacer. Disconnect the spring from the axle.
  2.  
  3. Disconnect and separate the spring from the rear shackle and the front hanger. Remove the spring.
  4.  

To install:
  1. Installation is the reverse of removal, but please note the following important steps.
  2.  
  3. Position the spring so it lines up with the shackle and the hanger. The double wrap end should face forward.
  4.  
  5. Tighten the hanger and shackle bolts to 92 ft. lbs. (125 Nm) on 1988-95 models and 136 ft. lbs. (185 Nm) on 1996-98 models.
  6.  
  7. Position the spring spacer so that the aligning pin contacts the edge of the spring and tighten the U-bolt nuts, diagonally to 18 ft. lbs. (25 Nm). Retighten the nuts to 80 ft. lbs. (109 Nm) on 1988-95 models and 92 ft. lbs. (125 Nm) on 1996-98 models.
  8.  
  9. Attach the retainer and insulator and then insert the stabilizer link into the proper hole in the axle. Tighten the nut until the distance between each retainer is 38mm (1 1 / 2 in.).
  10.  
  11. Tighten the stabilizer link-to-bar nut to 50 ft. lbs. (68 Nm).
  12.  
  13. Install the shock to the axle and tighten the lower mounting nut to 37 ft. lbs. (50 Nm).
  14.  

 
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