Removal & Installation
Before servicing the vehicle, refer to the Precautions Section.
NOTEDisconnecting the negative battery cable on some vehicles may interfere with the functions of the on-board computer systems and may require the computer to undergo a relearning process, once the negative battery cable is reconnected.
NOTEIf working near and/or around the SRS system and components, be sure to properly disable the SRS system. See disarming/arming the SRS system.
- Disconnect the negative battery cable.
Remove the timing gear cover.
- With the timing gear cover removed, rotate the engine so that the No. 6 cylinder T.D.C. mark on the camshaft sprocket, aligns with the mark on the crankshaft sprocket.
- Remove the 3 bolts holding the camshaft sprocket to the camshaft. Pull the camshaft sprocket forward.
If the camshaft sprocket will not move, give the sprocket a light blow with a plastic mallet, on the lower edge. Remove the sprocket and timing chain.
- Position the sprocket into place and secure with the 3 camshaft sprocket bolts without changing the engines position. Torque the bolts to 15-25 ft. lbs. (20-35 Nm).
- Install the timing gear cover.
- Using the GM diagnostic scan tool or aftermarket equivalent reprogram the necessary systems and components. Be sure to follow the scan tool manufacturer-s directions.