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.
2004 GMC Jimmy (CANADA) V6-4.3LFACTORY OEM SERVICE PROCEDURE
Control Assembly: Service and Repair
HVAC CONTROL ASSEMBLY REPLACEMENT
REMOVAL PROCEDURE
1. Remove the instrument panel accessory trim plate.
2. Remove the HVAC control assembly retaining screws.
3. Depress the HVAC control assembly retaining tabs and remove the HVAC control assembly from the instrument panel.
4. Disconnect the vacuum harness connector from the HVAC control assembly.
5. Disconnect the electrical connectors from the HVAC control assembly.
INSTALLATION PROCEDURE
1. Connect the electrical connectors to the HVAC control assembly.
2. Connect the vacuum harness connector to the HVAC control assembly.
3. Install the HVAC control assembly to the instrument panel. Ensure that all 4 retaining tabs lock into place.
4. Install the HVAC control assembly retaining screws.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the screws to..........1.9 N.m (17 lb in).
5. Install the instrument panel accessory trim plate.
REMOVAL PROCEDURE
1. Remove the instrument panel accessory trim plate.
2. Remove the HVAC control assembly retaining screws.
3. Depress the HVAC control assembly retaining tabs and remove the HVAC control assembly from the instrument panel.
4. Disconnect the vacuum harness connector from the HVAC control assembly.
5. Disconnect the electrical connectors from the HVAC control assembly.
INSTALLATION PROCEDURE
1. Connect the electrical connectors to the HVAC control assembly.
2. Connect the vacuum harness connector to the HVAC control assembly.
3. Install the HVAC control assembly to the instrument panel. Ensure that all 4 retaining tabs lock into place.
4. Install the HVAC control assembly retaining screws.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the screws to..........1.9 N.m (17 lb in).
5. Install the instrument panel accessory trim plate.
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.