GM Service Manual Online
For 1990-2009 cars only

Reverse Input Clutch Backing Plate Selection Table

Plate Thickness

Identification

7.249-7.409 mm (0.285-0.292 in)

2

6.678-6.519 mm (0.263-0.257 in)

3

5.947-5.787 mm (0.234-0.228 in)

4

Backing Plate Travel: 1.02-1.94 mm (0.040-0.076 in)