CTS-V V8-6.0L VIN U (2006)
6. Remove the bolt (1) from the powertrain control module (PCM) housing cover.
7. Push the cover outboard to release the locking tab.
8. Swing the cover open and remove the cover from the vehicle.
9. Remove the PCM from the housing.
10. Loosen the screws (1) at the PCM electrical connectors.
11. Disconnect the PCM electrical connectors.
12. Remove the PCM from the vehicle.
Installation Procedure