Installation Procedure

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

Fig 1: View Of Left Secondary Camshaft Drive Timing Shoe

Courtesy of GENERAL MOTORS CORP.

Position the left secondary camshaft drive chain shoe in through the left front cylinder head as shown.

NOTE: Refer to Fastener Notice .

Install the left secondary camshaft drive chain shoe bolt.
Tighten: Tighten the secondary camshaft drive chain shoe bolt to 25 N.m (18 lb ft).

Fig 2: Holding Camshaft

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Install the left intake actuator to the secondary chain, ensuring that the actuator timing mark is aligned with the chain link that was marked during disassembly.
Loosely install the oil control valve to secure the intake actuator to the camshaft.

Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve.
Tighten: Tighten the oil control valve to 120 N.m (89 lb ft).

Fig 3: View Of Left Secondary Timing Chain Tensioner & Bolts

Courtesy of GENERAL MOTORS CORP.

Install the left secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Left Side .

Fig 4: Aligning Camshaft Sprocket & Timing Chain Paint Marks

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Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).
Install the left camshaft actuator housing. Refer to Camshaft Position Actuator Housing Replacement - Left Side .