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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (HVAC System - Automatic) >> Description and Operation >> Air Temperature Description and Operation >> Heating and A/C Operation >> Dual Zone Operation

Dual Zone Operation

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The HVAC control module has temperature settings for the driver and the passenger. If the passenger setting is turned off then the driver setting controls both driver and passenger temperature actuators. The passenger setting can not be used without the driver setting also being ON. The passenger setting can be turned ON or OFF by pressing the temperature switch on the passenger side of the HVAC control module. When the passenger setting is ON, the passenger temperature can be adjusted independently from the driver setting and the passenger temperature is displayed on the passenger side of the control module. A different sunload or duct temperature on one side of the vehicle may cause different discharge air temperatures even when the passenger setting is not turned ON.

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