GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Brake Lining Replacement Thickness (Non TRW)

1.60 mm

0.063 in

Brake Lining Replacement Thickness (TRW)

2.25 mm

0.089 in

Brake Lining to Brake Rotor Maximum Clearance

0.13 mm

0.005 in

Rotor Thickness -- New

39.10 mm

1.539 in

Rotor Minimum Allowable Thickness After Refinish

37.12 mm

1.461 in

Rotor Discard Thickness

36.10 mm

1.421 in

Brake Rotor OD Runout

0.76 mm

0.030 in

Brake Rotor Thickness Variation

0.05 mm

0.002 in

Brake Rotor Lateral Runout

0.13 mm

0.005 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 specifications.