Heating and Defrosting

REMOVAL
1. Drain the engine cooling system.

WARNING: THE ENGINE MUST BE OFF, FULLY COOL AND THE COOLING SYSTEM FULLY DEPRESSURIZED BEFORE ATTEMPTING TO DISCONNECT ANY HEATER WATER HOSES. FAILURE TO COMPLY WITH THIS WARNING CAN RESULT IN SERIOUS INJURY OR BURNS FROM HOT LIQUID ESCAPING OUT OF THE ENGINE COOLING SYSTEM.

2. Disconnect the battery ground cable.

WARNING: TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE INJURY, THE AIR BAG SYSTEM BACKUP POWER SUPPLY MUST BE DEPLETED BEFORE REPAIRING ANY CLIMATE CONTROL COMPONENTS. TO DEPLETE THE BACKUP POWER SUPPLY, DISCONNECT THE BATTERY-TO-STARTER CABLE AND WAIT ONE MINUTE.







3. Disconnect the quick disconnect heater water hose couplings.
4. Plug the heater water hoses with a suitable 5/8-inch or 3/4-inch plug.
5. Remove the engine cover.
6. Remove the instrument panel finish panel.







7. Remove the heater core cover.
1. Remove the seven screws.
2. Remove the heater core cover.
^ Remove and discard the heater core case seal.







8. Remove the heater core.

NOTE: Use care not to spill the coolant remaining in the heater core during removal.

INSTALLATION
1. Follow the removal procedure in reverse order.

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.