Yukon XL 4WD V8-5.3L (2011)
Timing Chain: Service and Repair
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
Removal Procedure
1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement See: Engine Lubrication/Oil Pump/Service and
Repair.
2. Remove the starter motor. Refer to Starter Replacement See: Starting and Charging/Starting System/Starter Motor/Service and Repair.
Caution: Refer to Fastener Caution See: Service Precautions/Vehicle Damage Warnings/Fastener Caution.
Note: 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 Nm (37 lb ft).
4. Remove the camshaft position actuator. Refer to Camshaft Position Actuator Replacement See: Camshaft, Lifters and Push
Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement.
