Housing Assembly HVAC: Service and Repair

HVAC Module Assembly Replacement

Tools Required

J 43181 Heater Line QC Release Tool

Removal Procedure

1. Drain the engine coolant. Refer to Cooling System Draining and Filling (Vac-N-Fill) Cooling System Draining and Filling (Static Fill).




2. Using the J 43181 disconnect the inlet heater hose from the heater core.

1. Install the J 43181 to the heater core pipe.
2. Close the tool around the heater core pipe.
3. Firmly pull the tool into the quick connect end of the heater hose.
4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the inlet hose from the heater core.

3. Using the J 43181 disconnect the surge tank outlet hose from the heater core.

1. Install the J 43181 to the heater core pipe.
2. Close the tool around the heater core pipe.
3. Firmly pull the tool into the quick connect end of the heater hose.
4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the surge tank outlet hose from the heater core.

4. Remove the upper intake manifold sight shield.
5. Remove the battery.
6. Remove the accumulator.
7. Remove the instrument panel to the service position.




8. Remove the nuts (2) from the HVAC module (3).
9. Remove the bolts (1) from the HVAC module (3).
10. Remove the HVAC module (3).

Installation Procedure




1. If replacing the HVAC module, transfer the components from the old HVAC module as necessary.
2. Install the HVAC module (3).

Notice: Refer to Fastener Notice.

3. Install the nuts (2) to the HVAC module (3).

Tighten the nuts to 9 N.m (80 lb in).

4. Install the bolts (1) to the HVAC module (3).

Tighten the bolts to 4 N.m (35 lb in).

5. Connect the electrical harness and the ground connections.
6. Install the HVAC module drain hose.
7. Install the instrument panel.
8. Install the upper intake manifold sight shield.
9. Install the battery.
10. Install the accumulator.




11. Install the surge tank outlet hose to the heater core.
Firmly push the quick connect onto the heater core pipe until you hear an audible click.
12. Install the inlet heater hose to the heater core.
Firmly push the quick connect onto the heater core pipe until you hear an audible click.
13. Fill the engine coolant. Refer to Cooling System Draining and Filling (Vac-N-Fill) Cooling System Draining and Filling (Static Fill).