Sierra 3500 2WD V8-6.0L (2008)
Timing Chain: Service and Repair
Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator and Solenoid Valve Replacement
Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator and Solenoid Valve Replacement
Special Tools
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EN 46330 Timing Chain Tensioner Retaining Pin
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J 8433 Puller Bar
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J 41478 Crankshaft Front Oil Seal Installer
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J 41558 Crankshaft Sprocket Remover
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J 41665 Crankshaft Balancer and Sprocket Installer
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J 41816-2 Crankshaft End Protector
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J 42386-A Flywheel Holding Tool
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J 45059 Angle Meter
Removal Procedure
1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement (LY6, L76 and L92) (See: Engine Lubrication/Oil
Pump/Service and Repair)Oil Pump, Screen, and Crankshaft Oil Deflector Replacement (LH6, LMG, LY2 and LY5) (See: Engine
Lubrication/Oil Pump/Service and Repair) .
2. Remove the starter motor. Refer to Starter Motor Replacement (4.3L) Starter Motor Replacement (4.8L, 5.3L, 6.0L, and 6.2L) Starter Motor
Replacement (6.6L) .
Notice: Refer to Fastener Notice .
Important: Ensure that the teeth of the J 42386-A mesh with the teeth of the engine flywheel.
3. Install the J 42386-A (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 the J 42386-A bolts to 50 N.m (37 lb ft).
