Silverado Classic 3500 4WD V8-6.6L DSL Turbo (2007)
Engine Block Heater: Service and Repair
Coolant Heater Replacement (6.6L)
Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (w/RPO HP2) Draining
and Filling Cooling System (Vac-N-Fill).
2. Remove the right front tire and wheel.
3. Remove the right engine mount.
4. Disconnect the engine coolant heater cord.
5. Loosen the coolant heater bolt.
6. Remove the engine coolant heater from the engine block.
7. Do not score the machined surface of the hole.
8. Grasp the plug with pliers.
9. Pull the plug from the engine block.
10. Clean the core plug hole in order to remove the following substances:
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Burrs
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Compound
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Paint
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Rough spots
Installation Procedure
