GM Cavalier/Sunbird/Skyhawk/Firenza 1982-1994

Wheel Lug Studs

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All models use metric wheel nuts and studs. The nut will have the word "metric" stamped on the face and the stud will have the letter "M" into the threaded end.

The thread size of the metric wheel nuts and wheel studs are M12 X 1.5, this signifies:



M = Metric
 
12 = Diameter in millimeters
 
1.5 = Millimeters per thread
 

REPLACEMENT



Never try to reuse a wheel stud. Once a wheel stud has been removed, discard it and replace it with a new one.

Front Wheels

See Figures 1 and 2

  1. Remove the tire and wheel assembly.
  2.  
  3. As described later in this section, remove the hub and bearing assembly.
  4.  
  5. Using tool J 6627-A or equivalent wheel stud remover tool, remove and discard the wheel stud(s).
  6.  

To install:
  1. Insert the new stud from the rear of the hub.
  2.  
  3. Install flat washers and nut (flat side down), onto the wheel stud, then tighten until the wheel stud is fully seated.
  4.  
  5. Remove the nut and washers.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Once the hub and bearing is removed from the vehicle, use the proper tool to remove the wheel stud(s)



Click image to see an enlarged view

Fig. Fig. 2: Install washers and a nut on the wheel stud, then tighten until the stud is properly seated

  1. Install the hub and bearing assembly as outlined later in this section.
  2.  
  3. Install the tire and wheel assembly.
  4.  

Rear Wheels
  1. Remove the tire and wheel assembly.
  2.  
  3. Remove the brake drum, then remove the hub and bearing assembly. For details, please refer to the procedure located later in this section.
  4.  
  5. Unfasten and remove the wheel stud(s) using tool J 6627-A or an equivalent wheel stud removal tool. DIscard the removed stud(s).
  6.  

To install:
  1. Insert the new stud from the rear of the hub.
  2.  
  3. Install 4 flat washers onto the stud.
  4.  
  5. Install the wheel nut with the flat side toward the washers.
  6.  
  7. Tighten the nut until the stud head is properly seated in the hub flange.
  8.  
  9. Remove the nut and washers.
  10.  
  11. Install the hub and bearing assembly and the brake drum.
  12.  
  13. Install the tire and wheel assembly.
  14.  

 
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