Installation Procedure

Fig 1: Camshaft Lobes

Courtesy of GENERAL MOTORS CORP.

Install the exhaust camshaft onto the cylinder head with the number 1 cam lobes facing as shown.

IMPORTANT: Each bearing cap has a number and a directional arrow marked on the bearing cap.

Fig 2: Exhaust Camshaft Bearing Cap Bolts

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the camshaft bearing cap bolts.
Tighten:
- Tighten the camshaft bearing cap bolts in the sequence shown to 13 N.m (10 lb ft).
- Tighten the front bearing cap bolts to 23 N.m (17 lb ft).

Fig 3: View Of Sprocket Locating Pins

Courtesy of GENERAL MOTORS CORP.

Fig 4: Using Wrench To Hold/Rotate Camshaft

Courtesy of GENERAL MOTORS CORP.

Install the camshaft sprocket bolt in order to secure the cam sprocket.
Tighten: Tighten the bolt to 55 N.m (40 lb ft).
Install the timing chain onto the engine. Refer to Timing Chain and Sprockets Replacement .
Unlock the intake camshaft actuator locking pin. Refer to Camshaft Actuator Locking Pin Adjustment .
Check and adjust valve clearance. Refer to Valve Lash Adjustment .