Grand Cherokee 2WD V8-4.7L VIN J (2004)
Engine Block Heater: Service and Repair
ENGINE BLOCK HEATER
REMOVAL-4.7L ENGINE
1. Disconnect negative battery cable from battery.
2. Drain coolant from radiator.
3. Raise vehicle.
4. Remove engine cylinder block drain plug(s) located on the sides of cylinder block above the oil pan rail (Fig. 16).
5. Remove power cord from block heater.
6. Loosen screw at center of block heater. Remove heater assembly (Fig. 17).
INSTALLATION-4.7L ENGINE
1. Thoroughly clean cylinder block core hole and block heater seat.
2. Insert block heater assembly with element loop pointing at twelve o'clock (Fig. 17).
3. With block heater fully seated, tighten center screw to 2 Nm (17 in. lbs.) torque.
