GM Service Manual Online
For 1990-2009 cars only

Mark

Thickness (mm)

Thickness (in)

A

2.05-2.10

0.0807-0.0827

B

2.10-2.15

0.0827-0.0846

C

2.15-2.20

0.0846-0.0866

D

2.20-2.25

0.0866-0.0886

E

2.25-2.30

0.0886-0.0906

F

2.30-2.35

0.0906-0.0925