Buick Heater Air Conditioning Dashboard Control Module 10447470 10308120 Dual Zone Automatic

For 2005-2009 Buick LaCrosse and 2006-2011 Buick Regal dual-zone auto climate control systems, this control module adjusts heater and air conditioning dashboard operations, ensuring independent dual-zone temperature control. OEM numbers 10447470 and 10308120, cross-check with original parts. Replacement difficulty medium; professional technician recommended; disconnect battery negative and carefully remove dashboard trims. For B2B buyers, this is a factory-equivalent replacement.