Removal Procedure

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Fig 1: Flywheel Holding Tool

Courtesy of GENERAL MOTORS CORP.

Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement .
Remove the starter motor. Refer to Starter Replacement .

CAUTION:

Refer to Fastener Caution .

NOTE:

Ensure that the teeth of the J 42386-A flywheel holding tool mesh with the teeth of the engine flywheel.

Install the J 42386-A flywheel holding tool (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation.
Tighten

Tighten the J 42386-A flywheel holding tool bolts to 50 (37 lb ft).
Remove the camshaft position actuator. Refer to Camshaft Position Actuator Replacement .

Fig 2: Timing Chain Tensioner

Courtesy of GENERAL MOTORS CORP.

Remove the timing chain tension bolts (231) and tensioner (232).

Fig 3: Crankshaft Sprocket Special Tools

Courtesy of GENERAL MOTORS CORP.

Using the J 41816-2 crankshaft end protector (1), the J 41558 crankshaft sprocket remover (2), bolts (3) and the J 8433 puller bar (4) in order to remove the crankshaft sprocket.

Fig 4: Crankshaft Sprocket

Courtesy of GENERAL MOTORS CORP.

Remove the crankshaft sprocket (207).

Fig 5: Crankshaft Key And Keyway

Courtesy of GENERAL MOTORS CORP.

Remove the crankshaft sprocket key, if required.