GM Service Manual Online
For 1990-2009 cars only

Mark

Thickness (mm)

Thickness (in)

A

2.35-2.40

0.0925-0.0945

B

2.40-2.45

0.0945-0.0965

C

2.45-2.50

0.0965-0.0984

D

2.50-2.55

0.0984-0.1004

E

2.55-2.60

0.1004-0.1024

F

2.60-2.65

0.1024-0.1043

G

2.65-2.70

0.1043-0.1062

H

2.70-2.75

0.1062-0.1083

J

2.75-2.80

0.1083-0.1102

K

2.80-2.85

0.1102-0.1122

L

2.85-2.90

0.1122-0.1142

M

2.90-2.95

0.1142-0.1161