GM Service Manual Online
For 1990-2009 cars only

Mark

Thickness (mm)

Thickness (in)

A

2.10-2.15

0.0827-0.0846

B

2.15-2.20

0.0846-0.0866

C

2.20-2.25

0.0866-0.0886

D

2.25-2.30

0.0886-0.0906

E

2.30-2.35

0.0906-0.0925

F

2.35-2.40

0.0925-0.0945

G

2.40-2.45

0.0945-0.0965