Auxiliary Heating and A/C Operations

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of the auxiliary heating and A/C system is to supply heat or cool air and remove humidity from the rear interior of the vehicle through the front HVAC panel or rear DVD (U32), system if equipped. The rear auxiliary HVAC system will operate with the ignition in the ON position. The optional rear DVD (U32), system allows the back seat passengers to adjust the temperature of the rear flow of air through the overhead console, vehicle entertainment system (VES). The front auxiliary blower switch must be in the AUX position in order to control blower speed from the VES. The A/C function is only available to the auxiliary system when the vehicle is equipped with the optional DVD system (U32) or the auxiliary blower has been set to 1, 2 or 3 fan settings from the front HVAC panel. For maximum cooling operation of the HVAC system set the auxiliary fan control to 0 or OFF if no rear passengers are present. The rear passengers comfort is achieved by setting the auxiliary fan control to the number 3 setting. Setting the auxiliary blower speed to the number 3 setting will allow the rear passengers to receive the maximum air flow.