LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2009 >> CTS Base, 3.6 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (HVAC System - Automatic) >> Repair Instructions >> HVAC Control Module Replacement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

HVAC Control Module Replacement

WARNING: This page is about a different car, the 2009 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of HVAC Control Module
GM1683159Courtesy of GENERAL MOTORS CORP.
Callout Component Name
Preliminary Procedure: 
Remove the instrument panel center trim panel. Refer to Instrument Panel Center Trim Panel Replacement .
1 Heating and Air Conditioning Control Assembly Screw (Qty: 3)
CAUTION: Refer to Fastener Caution .

Tighten:  1.0 N.m (9 lb in)

2 Heating and Air Conditioning Control Assembly
Tip:  Disconnect the heating and air conditioning control assembly electrical connectors.
Refer to Control Module References for programming and setup information.