Installation Procedure

WARNING: This page is about a different variant/trim than selected.

Fig 1: Locating Left Secondary Camshaft Drive Chain Timing Marks

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly.

Align the exhaust camshaft actuator alignment mark (1) to the timing chain alignment mark (2) made during disassembly.
Ensure that the intake camshaft actuator alignment mark (4) and the timing chain alignment mark (3) are also aligned.
Position the exhaust camshaft actuator to the camshaft and install the actuator bolt hand tight.
Remove the EN-48313 . See Special Tools .

Fig 2: View Of Exhaust Camshaft Position Actuator Bolt

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

Tighten the exhaust camshaft position actuator bolt.
Tighten: Tighten the bolt to 58 N.m (43 lb ft).
Install the left intake and exhaust camshaft position actuator solenoids. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust .
Install the left intake and exhaust camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust .
Install the left camshaft cover. Refer to Camshaft Cover Replacement - Left Side .
Install the lower intake manifold with the upper manifold. Refer to Lower Intake Manifold Replacement .