CTS V6-3.2L VIN N (2003)
Rear Subframe: Service and Repair
Frame Replacement - Rear
Tools Required
J 39580 Engine Support Stand
Removal Procedure
1. Raise and support the vehicle. Refer toLifting and Jacking the Vehicle in General Information.
2. Remove the rear wheels. Refer toTire and Wheel Removal and Installation in Tires and Wheels.
3. Remove the exhaust system. Refer toExhaust System Replacement (LA3, LY9) in Engine Exhaust.
4. Remove the driveshaft from the differential. Refer toPropeller Shaft Replacement (Automatic Transmission) Propeller Shaft Replacement
(Manual Transmission) in Propeller Shaft.
Important: 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.
9. Disconnect the retainer clips on the park brake cables for the wheel speed sensors wiring harness.
10. Disconnect the rear brake pipe lines (1) forward of the rear wheelhouse.
