GM Service Manual Online
For 1990-2009 cars only

The driven member is a clutch disc with a spined hub that is free to slide lengthwise along the splines of the clutch shaft, but does not drive the shaft through these same splines. The suitable frictional facings are attached to each side of the clutch disk by means of rivets. The facings must be heat resistant in order to operate in a friction heated environment.