Removal

Control Valve Body Assembly Removal






1. Remove the air cleaner and duct assembly.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

For Vehicles equipped with OnStar (UE1) with Back Up Battery:

The Back Up Battery is a redundant power supply to allow limited OnStar functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar module). Do not disconnect the main vehicle battery or remove the OnStar fuse with the ignition key in any position other than OFF. Retained accessory power (RAP) should be allowed to time out or be disabled (simply opening the driver door should disable RAP) before disconnecting power. Disconnecting power to the OnStar module in any way while the ignition is On or with RAP activated may cause activation of the OnStar Back-Up Battery (BUB) system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The BUB is not rechargeable and once activated the BUB must be replaced.






2. Disconnect the negative battery cable from the battery.
Disconnect the positive battery cable from the battery.
3. Remove the hold-down retaining nut and screws, and lift them off the battery hold-down retainer.
Lift the battery out of the vehicle, and place the battery in a safe location.






4. Disconnect the powertrain control module (PCM) J2 (black 28-way) harness connector by moving the locking device toward the fender.
5. Remove the PCM attachment bolts.
6. Remove and flip the PCM on its side, out of the way.
7. Remove the battery tray bolts and the tray.
One bolt is located in the fender well.






8. Back out the transaxle connector bolt and disconnect the transaxle connector.






Notice: ABS equipped vehicles require the master cylinder to be moved off booster studs and the ABS mid-rail bracket bolt removed to allow the system to be lifted slightly for removal of the valvebody cover. Use care not to bend or kink brake lines. After removing the valvebody cover place the master cylinder back on the booster studs.

9. For antilock brake system (ABS) equipped vehicles, remove the master cylinder-to-booster nuts and the ABS mid-rail bracket bolt.
10. Remove the valvebody cover.






Notice: Do not remove the bolt indicated in the drawing. This bolt holds the upper and lower valvebody together as the valvebody is removed. If bolt is removed in the vehicle, parts will fall into the transaxle.

11. Remove the 11 valvebody-to-case bolts, identified on illustration by the heavy circles.
12. Pull the valvebody up and disengage it from the manual valve link.
13. Remove the valvebody.