GM Service Manual Online
For 1990-2009 cars only

Component Specifications Dimensional

Application

Specification

Metric

English

Brake Lining to Brake Rotor Maximum Clearance

0.13 mm

0.005 in

Brake Lining Replacement Thickness

1.60 mm

0.063 in

Brake Rotor OD Runout

0.76 mm

0.030 in

Brake Rotor Thickness Variation

0.05 mm

0.002 in

Brake Rotor Total Indicated Runout (TIR)

0.13 mm

0.005 in

Front Brake Rotor Minimum Thickness

33.53 mm

1.32 in

Hub and Wheel Bearing Assembly Lateral Runout

0.040 mm

0.0016 in

Rear Brake Rotor Minimum Thickness

34.70 mm

1.37 in

Component Specifications Brake System

System

Master Cylinder Dia.

Front Brakes (Disc)

Rear Brakes (Disc)

Brake Assist

JF9

50.8 mm

2.00 in

381.0x36.6 mm

15.00×1.44 in

936.2x36.7 mm

13.60×1.44 in

Hydraulic Hydro-Boost