GM Service Manual Online
For 1990-2009 cars only

Mark

Thickness (mm)

Thickness (in)

A

2.28-2.33

0.0898-0.0917

B

2.33-2.38

0.0917-0.0937

C

2.38-2.43

0.0937-0.0957

D

2.43-2.48

0.0957-0.0976

E

2.48-2.53

0.0976-0.0996

F

2.53-2.58

0.0996-0.1016

G

2.58-2.63

0.1016-0.1035