TrailBlazer 4WD V8-5.3L VIN M (2006)
Engine Block Heater: Service and Repair
Coolant Heater Replacement
Coolant Heater Replacement (LH6 and LS2)
Removal Procedure
1. Drain the cooling system.
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
3. Disconnect the coolant heater (1) electrical connector.
Important: 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, paint or other rough spots.
Installation Procedure
