C 1500 Yukon XL 2WD V8-5.3L VIN T (2001)
Heater Core: Service and Repair
Heater Core Replacement - Auxiliary
REMOVAL PROCEDURE
1. Recover the refrigerant from the A/C system.
2. Drain the engine coolant.
3. Raise the vehicle.
4. Disconnect the heater lines (2,3) from the auxiliary HVAC module at the underside of the vehicle.
5. Disconnect the air conditioning lines (2,3) from the auxiliary HVAC module at the underside of the vehicle.
6. Remove the nuts (2) from the studs (1) that secure the auxiliary HVAC module to the underside of the vehicle.
7. Remove the safety stands.
