Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Jeep Commander 4WD V6-3.7LFACTORY OEM SERVICE PROCEDURE
Rear Heater Core - Removal
REMOVAL
1. Remove the rear HVAC housing and place it on a workbench .
2. Carefully remove the foam seal (1) from the flange (2) located at the bottom of the rear HVAC housing (3). If the seal is deformed or damaged, it must be replaced.
3. Partially bend the inner half of the flange downward and remove the heater core tubes (4) from the flange.
4. Release the two tabs (1) that secure the rear heater core (2) in the rear HVAC housing (3).
5. Carefully pull the rear heater core out of the end of the rear HVAC housing. If the foam seals on the heater core are deformed or damaged, they must be replaced.
6. If required, remove the heater core tubes from the rear heater core and remove and discard the O-ring seals.
Factory Service Tools
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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.
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