GM 12606358
Camshaft Gear

For removal of timing chain and sprockets one has to remove the front cover of the engine. Next, remove the right bank secondary camshaft drive chain tensioner, right bank secondary camshaft drive chain shoe, and right bank secondary camshaft guide drive chain guide. Next, the right bank secondary camshaft drive chain, the Timing Chain Tensioner, needs to be removed. Proceed in taking out the timing chain upper guide along with the timing chain. To install, the timing chain to be installed first, the upper camshaft drive chain guide and the Timing Chain Tensioner. After that, install the right bank secondary camshaft drive chain, the right bank secondary camshaft drive chain guide, the right bank secondary camshaft drive chain shoe, and the right bank secondary camshaft drive chain tensioner. Last, reinstall the engine front cover.

Rotate the exhaust camshaft while pushing down on the EN49982-2 - retainer to engage the timing chain, then release the pressure to ensure the retainer stays in place.

Use an open-end wrench to rotate the camshafts toward each other to create slack in the chain, then unscrew the EN-48313 (Timing Chain Retention Tool) to retract its legs.

Take out the exhaust camshaft position actuator.

Align the hole in the actuator with the locating pin on the camshaft and rotate as necessary to align timing marks.

Install the Camshaft Holding Tool (J 44221) to the rear of the camshafts.

Check the sprocket alignment, ensuring the CMP actuator sprocket mark is at the 6 o'clock position and the crankshaft sprocket mark is at the 12 o'clock position.

Secure a tie strap through the center of the actuator and over the reluctor wheel.

First, remove the oil pump and starter motor, ensuring the teeth of the J 42386-A (Flywheel Holding Tool) mesh with the engine flywheel.