GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Brake Drums

  • Inside Diameter - New

200 mm

7.87 in

  • Maximum Inside Diameter

201 mm

7.91 in

  • Maximum Radial Runout - Not Installed

0.04 mm

0.002 in

Wheel Cylinder Diameter - Rear

20.64 mm

0.81 in

Brake Rotors

  • Disc Type

Ventilated

  • Discard Thickness for 236 mm (9.29 in) Diameter Rotor

18 mm

0.709 in

  • Discard Thickness for 256 mm (10.08 in) Diameter Rotor

22 mm

0.866 in

  • Maximum Assembled Lateral Runout - Installed

0.06 mm

0.002 in

  • Maximum Groove Depth

0.40 mm

0.016 in

  • Maximum Lateral Runout - Not Installed

0.03 mm

0.001 in

  • Maximum Thickness Variation

0.10 mm

0.004 in

  • New Rotor Thickness - 236 mm (9.29 in) Diameter Rotor

20 mm

0.787 in

  • New Rotor Thickness - 256 mm (10.08 in) Diameter Rotor

24 mm

0.945 in

  • Rotor Diameter - Larger Size with SACL500 Stamping

256 mm

10.08 in

  • Rotor Diameter - Smaller Size with SACL485F Stamping

236 mm

9.29 in

Booster Ratio

5:1

Booster Size

241.3 mm

9.5 in

Master Cylinder

  • Bore Diameter

22.22 mm

0.87 in

  • Minimum Bore Diameter

20.64 mm

0.81 in

Caliper

  • Piston Minimum Diameter

54 mm

2.12 in