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

Wheel Lug Studs

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REMOVAL & INSTALLATION



2wd Vehicles
FRONT WHEELS

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 Brakes of this guide.
  4.  
  5. Remove the outer wheel bearing and lift the rotor off the axle. For details on bearing removal, installation and adjustment, please refer to General Information & Maintenance of this guide.
  6.  



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. Properly support the rotor using press bars, then drive the stud out using an arbor press.
  2.  

To install:
  1. Clean the stud hole with a wire brush, then start the new stud with a hammer and drift pin. Do not use any lubricant or thread sealer.
  2.  
  3. Finish installing the stud with the press.
  4.  
  5. Install the rotor and adjust the wheel bearings.
  6.  
  7. Install the brake caliper and pads.
  8.  
  9. Install the tire, then remove the jackstands and carefully lower the vehicle.
  10.  

REAR WHEELS

The rear wheels studs are removed using the same procedure as the 4wd vehicles.

4wd Vehicles

See Figure 2

On 4wd vehicles, the front and rear wheels studs are removed using the same procedure.

  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 Brakes of this guide.
  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.  

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.  



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

 
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