Heater Core: Service and Repair

1999 Chrysler Cirrus L4-2.4L VIN XSECTION Service and Repair

Control Module:






The heater core is serviceable inside the vehicle. However, if the core has leaked a significant amount of coolant, the A/C housing must be removed. The housing should be disassembled and cleaned thoroughly before heater core replacement. If housing removal is necessary, refer to Airflow Control Box/Service and Repair. Service and Repair

REMOVAL
1. Disconnect battery negative remote cable.
2. Remove radio/control module bezel.
3. Remove right instrument panel side trim.
4. Remove two screws at lower right side support beam.
5. Remove bolt for instrument panel support at A-pillar.
6. Remove left instrument panel side trim.
7. Remove upper instrument panel bezel.
8. Remove lower knee bolster.
9. Remove console screws at instrument panel.
10. Remove gearshift knob.
11. Remove shifter bezel.
12. Remove console screws at rear. Remove rear half of console.
13. Remove front console screws. Remove front half of console.
14. Remove right side instrument panel support strut.
15. Drain coolant.
16. Remove heater hoses at cowl.
17. Remove heater core cover screws and cover.
18. Remove heater core.

INSTALLATION
1. Carefully install new heater core into the heater housing.
2. Fasten heater core cover to housing with screws provided.
3. Reinstall all necessary trim.
4. Fill coolant to level.
5. Reconnect battery.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.