GM S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual

Wheel Lug Studs

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REMOVAL & INSTALLATION



Front Wheels on 2wd Vehicles

See Figure 1

  1. Raise and support the front of the vehicle safely using jackstands, then remove the wheel.
  2.  
  3. Remove the brake pads and caliper. Support the caliper aside using wire or a coat hanger. For details, please refer to Chapter 9 of this manual.
  4.  
  5. Remove the outer wheel bearing and lift the rotor off the axle. For details on removal, installation and adjustment, please refer to Chapter 1 of this manual.
  6.  
  7. Properly support the rotor using press bars, then drive the stud out using an arbor press.
  8.  

To install:
  1. Clean the stud hole with a wire brush and start the new stud with a hammer and drift pin. Do not use any lubricant or thread sealer.
  2.  



Click image to see an enlarged view

Fig. Fig. 1: Use an arbor press to drive the old stud from the rotor-front wheel of 2wd vehicles

  1. Finish installing the stud with the press.
  2.  
  3. Install the rotor and adjust the wheel bearing.
  4.  
  5. Install the brake caliper and pads.
  6.  
  7. Install the tire, then remove the jackstands and carefully lower the vehicle.
  8.  

Rear Wheels and Front Wheels on 4wd Vehicles

See Figure 2

  1. Raise and support the vehicle safely using jackstands, then remove the wheel.
  2.  
  3. On front wheels, remove the brake, caliper and rotor. Support the caliper from the suspension using wire or a coat hanger. For details, please refer to Chapter 9 of this manual.
  4.  
  5. On rear wheels, remove the brake drum.
  6.  

When replacing the front hub bolts on vehicles with 4 wheel anti-lock brakes, remove and replace only one wheel lug stud at a time to avoid misaligning the speed sensor exciter ring.

  1. Do not hammer the wheel stud to remove it. This will ruin the wheel bearing. Use the stud press tool such as J-2227A or equivalent to press the stud out of the hub.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: On many vehicles a stud press tool may be used with the hub still installed on the vehicle

To install:
  1. Clean the hole with a wire brush and start the new stud into the hole. Do not use any lubricant or thread sealer.
  2.  
  3. Stack 4 or 1 washers onto the stud and then put the nut on. Tighten the nut to draw the stud into place.It should be easy to feel when the stud is seated.
  4.  
  5. Reinstall the rotor and caliper or drum, as applicable.
  6.  
  7. Install the tire, then remove the jackstands and carefully lower the vehicle.
  8.  

 
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