C Yukon 2WD V8-5.7L VIN R (1999)
Heater Core: Service and Repair
Heater Core Replacement - Auxiliary
REMOVAL PROCEDURE
1. Drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
2. Remove the right rear quarter trim panel.
3. Remove the right rear wheelhouse.
4. Disconnect the auxiliary heater hoses from the heater core.
5. Disconnect the electrical connectors, as necessary.
6. Remove the drain valve (3).
7. Remove the bolts (1)
8. Remove the nuts (2, 4).
9. Remove the heater module.
10. Remove the blower motor, it necessary.
11. Remove the heater case cover.
12. Remove the heater core.
INSTALLATION PROCEDURE
1. Install the heater core.
2. Install the heater case cover.
3. Install the blower motor, if necessary.
4. Install the heater module.
5. Install the nuts (2, 4).
6. Install the bolts.
NOTE: Refer to Fastener Notice in Cautions and Notices.
7. Tighten the following fasteners:
Tighten