GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Front Brakes:

  • Rotor Discard Thickness (see note)

30.7 mm

1.21 in

  • Minimum Rotor Thickness

31.08 mm

1.22 in

  • Rotor Thickness (new)

32.2 mm

1.27 in

Maximum Lateral Runout

0.080 mm

0.003 in

Maximum Scoring

1.50 mm

0.059 in

Thickness Variation

0.013 mm

0.0005 in

Rear Brakes:

  • Discard Thickness (see note)

9.0 mm

0.35 in

  • Minimum Wear Thickness

10.0 mm

0.39 in

  • Rotor Thickness (new)

11.0 mm

0.43 in

Important: 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 maximum or minimum thickness after refinish specifications.