CTS-V V8-6.0L VIN U (2006)
3. Remove the two front differential mounting bolts
4. Install the rubber insulators (2), GM P/N 20827776, between the rear drive axle and the body at the front differential bolt locations.
5. Install the two front differential mounting bolts.
Tighten
Tighten the front differential mounting bolts (1) to 175Nm (129 lb ft).
For Vehicles Built Prior to VIN Breakpoint 90158774 - Install Washers Between the Rear Cradle Mount and Lower Rate Plate
1. Install a support fixture to support the rear frame assembly.
