Removal Procedure

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

NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.

Remove the oil pump. Refer to Oil Pump, Pump Screen and Deflector Replacement .
Remove the camshaft sprocket bolts.
Remove the camshaft sprocket and timing chain.

Fig 1: View Of Camshaft Sprocket, Timing Chain & Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the chain guide bolts and remove the chain guide.

Fig 2: Removing The Crankshaft Sprocket Using J 8433-1, J 41816-2 & J 41558

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Use the J 8433 , J 41816-2 and J 41558 in order to remove the crankshaft sprocket. See Special Tools and Equipment .

Fig 3: View Of Crankshaft Sprocket

Courtesy of GENERAL MOTORS CORP.

Fig 4: View Of Crankshaft Key & Keyway

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Remove the crankshaft sprocket key (if required).
Clean and inspect the timing chain and sprockets. Refer to Timing Chain and Sprockets Cleaning and Inspection .