S10/T10 Blazer 2WD V6-4.3L VIN X (2003)
Housing Assembly HVAC: Service and Repair
HEATER/VENT MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the instrument panel.
2. Drain the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
3. Remove the blower motor resistor.
4. Remove the heat/vent module mounting bolt through the blower motor resistor or service access cover opening.
IMPORTANT Mark and use the same mounting bolt for the heater/vent module during the installation process. Other mounting bolts are longer and
will obstruct the operation of the temperature door.
5. Remove the right wheel house panel.
6. Remove the front right tire.
7. On the Utility only, remove the A/C evaporator and blower module heat shield screws.
8. On the Utility only, slide the A/C evaporator and blower module heat shield toward the front of the vehicle.
9. Remove the 2 lower heat/vent module mounting nuts.
10. On the Utility only, remove the A/C evaporator and blower module heat shield bracket.
