Engine Block Heater: Service and Repair

Block Heater





3.5L Gasoline Turbocharged Direct Injection (GTDI) and 3.7L Engines









5.0L Engine









6.2L Engine









Removal and Installation

All engines

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Drain the engine cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

3.5L Gasoline Turbocharged Direct Injection (GTDI) and 3.7L engines

3. Remove the air cleaner outlet pipe. For additional information, refer to Intake Air Distribution and Filtering [1][2]Diagrams.

All engines

4. NOTICE: To install, route the block heater power cable away from hot or rotating components, or the cable can be damaged.

Disconnect the block heater electrical connector.

3.5L GTDI and 3.7L engines

5. Remove the bolt and the block heater.
- Remove and discard the O-ring seal.

- To install, install a new O-ring seal and lubricate it with clean engine coolant.

- To install, tighten to 6 Nm (53 lb-in).

5.0L and 6.2L engines

6. Remove the block heater.
- To install, tighten to 40 Nm (30 lb-ft).