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Home >> Chevrolet >> 2001 >> Express 1 Ton Van V8-6.5L DSL Turbo VIN F >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Description and Operation >> A/C Mode >> Front Auxiliary HVAC Control Assembly with Rear Auxiliary HVAC Control Assembly
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Front Auxiliary HVAC Control Assembly with Rear Auxiliary HVAC Control Assembly

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, and auxiliary HVAC control processor. The auxiliary air temperature actuator moves the temperature door to the desired output. Ground for the auxiliary air temperature actuator, auxiliary HVAC control processor and front auxiliary HVAC control assembly are provided by the ground circuit.
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