Sierra 3500 4WD V8-8.1L VIN G (2006)
Engine Block Heater: Service and Repair
Coolant Heater Replacement
Coolant Heater Replacement (8.1L)
Removal Procedure
1. Drain the cooling system.
2. Disconnect the block heater cord from the block heater.
3. Remove the engine block heater.
Installation Procedure
1. Apply sealant GM P/N 12346004, (Canadian P/N 10953480), or equivalent to the threads of the engine block heater.
Notice: Refer to Fastener Notice in Service Precautions.
