GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Front Brake Pads

  • Taper

0.15 mm

0.006 in

Front Brake Rotors

  • Rotor Diameter Small (L36)

278.0 mm

10.9 in

  • Rotor Diameter Large (L36)

303.0 mm

11.8 in

  • Rotor Diameter (LD8)

323.0 mm

12.7 in

  • Rotor Discard Thickness*

30.7 mm

1.209 in

  • Rotor Maximum Allowable Assembled Lateral Runout

0.06 mm

0.002 in

  • Rotor Maximum Allowable Scoring

1.50 mm

0.059 in

  • Rotor Maximum Allowable Thickness Variation

0.025 mm

0.001 in

  • Rotor Minimum Allowable Thickness after Refinishing (L36)

31.08 mm

1.224 in

  • Rotor Minimum Allowable Thickness after Refinishing (LD8)

30.70 mm

1.209 in

  • Rotor Thickness (New)

32.20 mm

1.267 in

Rear Brake Pads

  • Taper

0.15 mm

0.006 in

Rear Brake Rotors

  • Rotor Diameter (L36)

281.00 mm

11.06 in

  • Rotor Diameter (LD8)

297.00 mm

11.7 in

  • Rotor Discard Thickness*

9.0 mm

0.354 in

  • Rotor Maximum Allowable Assembled Lateral Runout

0.06 mm

0.002 in

  • Rotor Maximum Allowable Scoring

1.50 mm

0.059 in

  • Rotor Maximum Allowable Thickness Variation

0.025 mm

0.001 in

  • Rotor Minimum Allowable Thickness after Refinishing

10.25 mm

0.404 in

  • Rotor Thickness (New)

11.00 mm

0.433 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.