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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (HVAC System - Automatic) >> Description and Operation >> Air Delivery Description and Operation >> HVAC Control Components >> Auxiliary HVAC Control Module (without RSA)

Auxiliary HVAC Control Module (without RSA)

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The Auxiliary HVAC Control Module uses a set of three potentiometers to control rear fan speed, temperature, and mode settings. The Auxiliary HVAC Control module has inputs for 5V and low Reference that is used by all three potentiometers. There are three signal circuits between each of the potentiometers and the HVAC Control Module.

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