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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> Auxiliary Blower Motor Malfunction >> Circuit/System Description >> Auxiliary HVAC Control Module

Auxiliary HVAC Control Module

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The front HVAC control module must be in the ON position for GMLAN communication to allow the rear HVAC control module to operate.

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