CTS RWD V8-6.2L SC (2009)
Rear Subframe: Service and Repair
Rear Frame Replacement
Special Tools
J 39580 Engine Support Stand
Removal Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
2. Remove the rear wheels. Refer to Tire and Wheel Removal and Installation (See: Maintenance/Wheels and Tires/Service and Repair).
3. Remove the exhaust system. Refer to Exhaust System Replacement (With LY7 or LLT) (See: Engine, Cooling and Exhaust/Exhaust
System/Service and Repair).
4. Remove the propeller shaft. Refer to Rear Propeller Shaft Replacement (RPO LP1/LY7) (See: Transmission and Drivetrain/Drive/Propeller
Shafts, Bearings and Joints/Drive/Propeller Shaft/Service and Repair)Rear Propeller Shaft Replacement (RPO LSA) (See: Transmission and
Drivetrain/Drive/Propeller Shafts, Bearings and Joints/Drive/Propeller Shaft/Service and Repair).
Note: The lower control arms will drop approximately 3 inches when the shock to lower control arm bolts are removed.
5. Install the support fixture (3), in order to raise the lower control arm to relieve the tension from the shock.
6. Remove the shocks lower mounting bolt (2).
7. Remove the support fixture.
8. Disconnect the electrical connectors for the rear wheel speed sensors (WSS).
9. Disconnect the WSS wiring harness retainer clips from the upper control arms.
10. Disconnect the rear brake pipe lines (1) forward of the rear wheelhouse.