H3 V8-5.3L (2008)
Engine Block Heater: Service and Repair
Coolant Heater Replacement
Coolant Heater Replacement (With LH8)
Removal Procedure
1. Drain the cooling system/engine block. Refer to Cooling System Draining and Filling (Static Fill) (See: Cooling System/Service and
Repair/Draining and Filling Cooling System)Cooling System Draining and Filling (Vac-N-Fill) (See: Cooling System/Service and
Repair/Draining and Filling Cooling System) .
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair) .
3. Remove the oil pan skid plate bolts and plate. Refer to Oil Pan Skid Plate Replacement (See: Body and Frame/Frame/Skid Plate/Service and
Repair/Oil Pan Skid Plate Replacement) .
4. Disconnect the coolant heater cord electrical connector.
Important: Do not score the surface of the engine block hole when removing the coolant heater.
