GM Full-Size Trucks 1988-1998 Repair Information

Wheels

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REMOVAL & INSTALLATION



See Figures 1 through 6

  1. Park the vehicle on a level surface.
  2.  
  3. Remove the jack, tire iron and, if necessary, the spare tire from their storage compartments.
  4.  
  5. Refer to Routine Maintenance of this repair guide for the jacking points on your vehicle. Then, place the jack in the proper position.
  6.  
  7. If equipped with an automatic transmission, place the selector lever in P ; with a manual transmission, place the shifter in Reverse.
  8.  
  9. If equipped with a wheel cover or hub cap, insert the tapered end of the tire iron in the groove and pry off the cover.
  10.  
  11. Apply the parking brake and block the diagonally opposite wheel with a wheel chock or two.
  12.  

Wheel chocks may be purchased at your local auto parts store, or a block of wood cut into wedges may be used. If possible, keep one or two of the chocks in your tire storage compartment, in case any of the tires has to be removed on the side of the road.

  1. With the tires still on the ground, use the tire iron/wrench to break the lug nuts loose.
  2.  

If a nut is stuck, never use heat to loosen it or damage to the wheel and bearings may occur. If the nuts are seized, one or two heavy hammer blows directly on the end of the bolt usually loosens the rust. Be careful, as continued pounding will likely damage the brake drum or rotor.

  1. Using the jack, raise the vehicle until the tire is clear of the ground. Support the vehicle safely using jackstands.
  2.  
  3. Unfasten the lug nuts, then remove the tire and wheel assembly.
  4.  



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Fig. Fig. 1: The jack is sometimes stored under the hood on the inner fender. There may also be a decal showing jack operation and lifting point locations



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Fig. Fig. 2: Use the tire iron to loosen the wheel trim cover



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Fig. Fig. 3: Once loosened, remove the wheel trim cover from the wheel



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Fig. Fig. 4: Use the tire iron to loosen the wheel lug nuts before raising the vehicle with the jack



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Fig. Fig. 5: Place the jack at a suitable lifting point and raise the vehicle

To install:
  1. On models with single wheels perform the following steps for installation.
    1. Lift the wheel onto the lugs.
    2.  
    3. Snug down the topmost nut, then snug down the rest of the nuts in a crisscross pattern.
    4.  
    5. When all nuts are snugged, torque them, in a crisscross pattern, to the specifications listed at the end of this procedure.
    6.  

  2.  
  3. On models with dual wheels perform the following steps for installation.
    1. Install the inner and outer wheels, and clamp ring. Be sure that the pins on the clamp ring face outwards.
    2.  
    3. Install the nuts snugly, in a crisscross pattern. When all the lugs are snugged, tighten them in the sequence shown to the specifications listed.
    4.  

  4.  

Trucks with single front and rear wheels:


R10/1500 w/5 studs and steel or aluminum wheels: 100 ft. lbs. (140 Nm)
 
V10/1500 w/6 studs and steel wheels: 88 ft. lbs. (120 Nm)
 
V10/1500 w/6 studs and aluminum wheels: 100 ft. lbs. (140 Nm)
 
All C/K Series: 1988-90 models, 90 ft. lbs. (123 Nm); 1991-95 models, 120 ft. lbs. (160 Nm); 1996-98 models, 140 ft. lbs. (190 Nm)
 
All R/V Series with 8 studs:-120 ft. lbs. (160 Nm)
 

Trucks with single front and dual rear wheels:


R/V Series with 8 studs-140 ft. lbs. (190 Nm)
 
R/V Series with 10 studs-175 ft. lbs. (240 Nm)
 
C/K Series: 1988-90 models, 125 ft. lbs. (170 Nm).
 
C/K Series: 1991-98 models with 8 studs, 140 ft. lbs. (190 Nm).
 
C/K Series: 1991-98 models with 10 studs, 177 ft. lbs. (240 Nm)
 



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Fig. Fig. 6: Wheel lug nut tightening sequence-all models

INSPECTION



Inspect the tires for lacerations, puncture marks, nails and other sharp objects. Repair or replace as necessary. Also check the tires for treadwear and air pressure as outlined in Routine Maintenance of this repair guide .

Check the wheel assemblies for dents, cracks, rust and metal fatigue. Repair or replace as necessary.

 
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