GM Service Manual Online
For 1990-2009 cars only

Component Specifications Front

Front

Application

Specification

Metric

English

Front Disc Brake Pads

  • Disc Brake Pad Material

Semi-metallic, Non-asbestos

  • Disc Brake Pad Wear Sensor

Electronic

  • Brake Lining with Lining Plate New (Approximate)

17.5 +/- 0.6 mm

0.688 +/- 0.023 in

  • Brake Lining with Lining Plate (Minimum)

8 mm

0.315 in

  • Brake Lining Taper (Maximum)

0.15 mm

0.006 in

Brake Caliper

  • Type

Single Piston, Sliding Caliper

  • Caliper Bore Diameter

57.0 mm

2.244 in

Brake Rotor

  • Type

Vented

  • Diameter (Nominal)

296 mm

11.653 in

  • Maximum Lateral Runout (Rotor Installed)

0.16 mm

0.004 in

  • Maximum Lateral Runout (Rotor Removed)

0.04 mm

0.001 in

  • Thickness (New)

28 mm

1.102 in

  • Maximum Thickness Variation

0.02 mm

0.0005 in

  • Minimum Thickness after Refinish

26.5 mm

1.043 in

  • Discard Thickness* All front brake rotors have a discard dimension cast in them. This is a wear dimension and not a refinish dimension. Any brake rotor which does not meet the specification should be replaced.

25 mm

0.984 in

Component Specifications Rear

Rear

Application

Specification

Metric

English

Brake Caliper Piston Bore Diameter

40 mm

1.574 in

Brake Rotor Diameter (Nominal)

286 mm

11.259 in

Brake Rotor Discard Thickness

10 mm

0.393 in

Brake Rotor Lateral Runout (On-Vehicle)

0.10 mm

0.004 in

Brake Rotor Thickness (New)

12 mm

0.472 in

Brake Rotor Thickness After Refinish (Minimum)

11 mm

0.433 in

Brake Rotor Thickness Variation (Maximum)

0.0013 mm

0.0005 in

Discard Thickness

*All brake rotors have a discard dimension cast into them. This is a wear dimension and not a refinish dimension.

Any brake rotor which does not meet this specification should be replaced.

0.15 mm

0.006 in