Heater Core Replacement LA1

Tools Required

J 38185 Hose Clamp Pliers

1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
2. Remove the wiper module. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.
3. Disconnect the brake booster vacuum hose and reposition.
4. Remove the air cleaner cover and intake tube. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 3.4 L.

Important: Disconnect the throttle and cruise control cables from the TBI mounting bracket to prevent bending the cable housings.

5. Disconnect the throttle and cruise control cables.
6. Remove the transmission fluid filler tube. Refer to Transmission Fluid Filler Tube Replacement in Automatic Transaxle - 4T65-E.



7. Disconnect both of the heater hose clamps at the heater core using the J 38185 .
8. Disconnect the heater hoses from the heater core.

Important: Cap off the heater core inlet and outlet pipes to prevent coolant spillage inside of the vehicle.

9. Cap off the heater core pipes.
10. Remove the right I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages and Console.
11. Remove the left I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages and Console.
12. Remove the center floor air outlet. Refer to Floor Air Outlet Replacement - Center .



13. Remove the screws retaining the heater outlet duct.
14. Remove the heater outlet duct.
15. Remove the I/P harness to heater core cover tie strap.



16. Remove the screws retaining the heater core cover.
17. Remove the heater core cover.



18. Remove the heater core pipe retaining screw.
19. Remove the heater core from the HVAC module.

1. Install the heater core to the HVAC module case.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




2. Install the heater core pipe retaining clamp screw.

Tighten
Tighten the screw to 0.9 N·m (8 lb in).




3. Install the heater core cover.
4. Install the heater core cover retaining screws.

Tighten
Tighten the screws to 0.9 N·m (8 lb in).




5. Install the heater outlet duct.
6. Install the heater outlet duct screws.

Tighten
Tighten the screws to 0.9 N·m (8 lb in).

7. Install the I/P harness to heater core cover tie strap.
8. Install the center floor air outlet. Refer to Floor Air Outlet Replacement - Center .
9. Install the left I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages and Console.
10. Install the right I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages and Console.



11. Install the heater hoses to the heater core.
12. Connect the heater hose clamps using the J 38185 .
13. Install the transmission fluid filler tube. Refer to Transmission Fluid Filler Tube Replacement in Automatic Transaxle - 4T65-E.
14. Install the air cleaner cover and intake hose. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 3.4 L.
15. Connect the throttle and cruise control cables to the TBI mounting bracket.
16. Connect the brake booster vacuum hose.
17. Install the wiper module. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.
18. Fill the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.