Colorado 2WD V8-5.3L (2009)
Engine Block Heater: Service and Repair
Coolant Heater Replacement
Coolant Heater Replacement (With LH8) (5.3L)
Removal Procedure
1. Drain the cooling system/engine block. Refer to Cooling System Draining and Filling (Static Fill) (See: Cooling System/Service and Repair
)Cooling System Draining and Filling (Vac N Fill) (See: Cooling System/Service and Repair).
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
3. Disconnect the coolant heater cord electrical connector.
Note: Do not score the surface of the engine block hole when removing the coolant heater.
4. Remove the coolant heater from the engine block.
5. Remove any burrs, sealer, or other rough spots.
