Sierra 1500 4WD V8-5.3L VIN B (2005)
Housing Assembly HVAC: Service and Repair
HVAC Module Assembly Replacement
HEATER/VENT MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Drain the engine coolant.
2. If equipped remove the auxiliary battery.
3. Reposition the inlet heater hose clamp from the heater core.
4. Remove the inlet heater hose from the heater core.
5. Reposition the outlet heater hose clamp from the heater core.
6. Remove the outlet heater hose from the heater core.
7. Remove the I/P carrier. See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Service and Repair/Instrument Panel (I/P)
Carrier Replacement
8. Remove the heater/vent module drain hose.
9. Disconnect the electrical harnesses and the ground connections.
10. Remove the heater/vent module mounting nuts and the screws.
11. Remove the heater/vent module assembly from the vehicle.
INSTALLATION PROCEDURE
