Removal Procedure

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

Remove the right camshaft cover. Refer to Camshaft Cover Replacement - Right Side .
Remove the engine oil pump. Refer to Oil Pump Replacement .

Fig 1: Identifying Primary Timing Gear Alignment Marks

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Align the primary timing marks (1) using the J 39946 .

Fig 2: Identifying EN 46328 Cam Tool

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Install the EN 46328 (1) on the right bank camshafts (2).

Fig 3: Using A Paint Stick To Create A Mark On The Timing Chain Link Adjacent To Each Camshaft Sprocket Timing Mark

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Create two reference marks (1) using a paint stick to identify the chain link adjacent to each actuator timing mark (2, 3).

Fig 4: View Of Mechanics Wire, Right Secondary Camshaft Drive Chain Shoe & Front Cover Bolt

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Install an engine front cover bolt (2) into the front of the engine.

IMPORTANT: Securing the right secondary camshaft drive chain shoe will prevent the right camshaft drive sprocket teeth from skipping on the right secondary timing chain.

Wrap mechanics wire (1) tightly around both the right secondary camshaft drive chain shoe (3) and the front cover bolt (2).

Fig 5: View Of Right Secondary Timing Chain Tensioner & Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the 2 bolts attaching the right secondary camshaft drive chain tensioner to the engine block.
Remove the right secondary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .