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.
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HOMESERVICE MANUALSCHEVROLET2001EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL ASSEMBLYDESCRIPTION AND OPERATIONA/C MODEFRONT AUXILIARY HVAC CONTROL ASSEMBLY ONLY
2001 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Front Auxiliary HVAC Control Assembly Only
2001 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Front Auxiliary HVAC Control Assembly Only
The auxiliary temperature switch in the front auxiliary HVAC control assembly allows the driver to adjust the temperature in the rear of the vehicle. Power is provided to both the front auxiliary HVAC control assembly and the auxiliary air temperature actuator from the IP fuse block on the ignition 3 voltage circuit.
Voltage delivered to the front auxiliary HVAC control assembly on the ignition 3 voltage circuit is sent to a variable resistor. Based on the placement of the temperature switch, a varied voltage is sent to the auxiliary air temperature actuator on the auxiliary air temperature door control circuit. The auxiliary air temperature actuator moves the temperature door to the desired output. Ground for the auxiliary air temperature actuator and front auxiliary HVAC control assembly are provided by the ground circuit.
Voltage delivered to the front auxiliary HVAC control assembly on the ignition 3 voltage circuit is sent to a variable resistor. Based on the placement of the temperature switch, a varied voltage is sent to the auxiliary air temperature actuator on the auxiliary air temperature door control circuit. The auxiliary air temperature actuator moves the temperature door to the desired output. Ground for the auxiliary air temperature actuator and front auxiliary HVAC control assembly are provided by the ground circuit.
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.