Colorado 4WD V8-5.3L (2010)
Harmonic Balancer - Crankshaft Pulley: Service and Repair
Crankshaft Balancer Replacement
Special Tools
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J 41478 Crankshaft Front Oil Seal Installer
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J 41665 Crankshaft Balancer and Sprocket Installer
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J 41816-A Crankshaft Balancer Remover
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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 air conditioning (A/C) drive belt. Refer to Air Conditioning Compressor Belt Replacement (See: Drive Belts, Mounts, Brackets and
Accessories/Drive Belt/Service and Repair/Air Conditioning Compressor Belt Replacement).
2. Remove the cooling fan and shroud. Refer to Engine Coolant Fan Shroud Replacement (LLV, LLR) (See: Cooling System/Fan Shroud/Service
and Repair) Engine Coolant Fan Shroud Replacement (LH9) (See: Cooling System/Fan Shroud/Service and Repair).
3. Remove the starter motor. Refer to Starter Replacement (LLV/LLR) (See: Starting and Charging/Starting System/Starter Motor/Service and
Repair) Starter Replacement (LH8) (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.
4. 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).