GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Brake Pad Lining Minimum Thickness

1.0 mm

0.039 in

Brake Pad Lining Thickness - New

12.0 mm

0.472 in

Brake Rotor Diameter

256.00 mm

10.079 in

Brake Rotor Discard Thickness*

22.0 mm

0.87 in

Brake Rotor Maximum Allowable Assembled Lateral Runout

0.06 mm

0.002 in

Brake Rotor Maximum Allowable Scoring

1.50 mm

0.059 in

Brake Rotor Maximum Allowable Thickness Variation

0.025 mm

0.001 in

Brake Rotor Minimum Allowable Thickness After Refinish

22.75 mm

0.896 in

Brake Rotor Thickness - New

23.69 mm

0.933 in

* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specification.