Removal Procedure

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Upper Timing Chain Guide Bolts And Guide

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Remove the camshaft cover. Refer to Camshaft Cover Replacement .
Remove the upper timing chain guide bolts and guide.

Fig 2: Loosening/Tightening Camshaft Actuator Retainer Bolts

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Install a 24 mm wrench onto the hex on the camshaft in order to rotate the camshafts clockwise and install the camshaft actuator retainer EN-48953 (1).
Install the camshaft actuator retainer bolts.
NOTE: Refer to Fastener Notice .

Tighten: Tighten the bolts to 10 N.m (89 lb in).
Loosen, but do not remove the intake and exhaust camshaft actuator bolts.

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

Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.

Fig 3: View Of Timing Chain Tensioner

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Remove the timing chain tensioner.

Fig 4: View Of Timing Chain Retention Tool

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IMPORTANT: The camshaft actuators should not rotate during the removal or installation.

IMPORTANT: Ensure the tips of the EN-48749 are fully engaged into the timing chain. The retention tool rod can be used on the back side of the chain to ensure the teeth from the retention tool are engaged.

Install the timing chain retention tool EN-48749 (1) to the exhaust side of the timing chain.

Fig 5: Identifying Exhaust Camshaft Actuator & Bolt

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Remove and discard the exhaust camshaft actuator bolt (2).
Remove the exhaust camshaft actuator (3) from the camshaft while also removing the actuator from the timing chain.