GM Service Manual Online
For 1990-2009 cars only

Object Number: 28691  Size: SH

Note: End play specifications are the same for both the 4-pinion reaction carrier (651) and the 5-pinion reaction carrier.

Using a feeler gage, measure the pinion washer wear. The correct end play is between 0.228-0.610 mm (0.009-0.024 in).