Yukon XL 2500 2WD V8-8.1L VIN G (2004)
Engine Block Heater: Service and Repair
Coolant Heater
Coolant Heater Replacement (8.1 L Engine)
Removal Procedure
1. Drain the cooling system/engine block.
2. Raise and suitably support the vehicle.
3. Remove the oil pan skid plate bolts and plate.
4. Disconnect the coolant heater electrical connector.
5. Remove the coolant heater from the engine block.