HVAC Control Module X2

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

Fig 1: HVAC Control Module - X2 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
A1	0.35 L-BU	733	Air Temperature Door Position Signal
A2	0.35 YE/BK	1814	Mode Door Position Signal
A3	0.35 BN	41	Ignition 3 Voltage
A4	0.35 GY	2599	Rear Mode Door Position Signal
A5	-	-	Not Used
A6	0.35 L-BU	5517	Low Reference
A7	0.35 L-GN/WH	5729	Rear Mode Door Control A
A8	0.35 YE	1791	Air Temperature Door Control Low Reference
A9	0.35 GY/BK	2778	Passenger Air Temperature Motor Control
A10	0.35 YE	1318	Mode Door Control B
A11	0.35 GY	5127	After Boil Coolant Pump Relay Control (LLT/LH2) / Rear Differential Cooler Pump Relay Control (LC3)
A12	0.35 PU	1838	Recirculation Door Position Signal
B1	0.35 D-BU	1646	Passenger Air Temperature Door Position Signal
B2	-	-	Not Used
B3	0.35 D-GN	5518	Auxiliary Inside Air Temperature Sensor Signal
B4	0.35 PU	73	Rear Mode Switch Signal (KA6)
B5	0.35 L-BU	72	Rear Temperature Switch Signal (KA6)
B6	0.35 BN	5516	Inside Air Temperature Sensor Assembly Control
B7	0.35 L-GN/BK	5730	Rear Mode Door Control B
B8	0.35 D-BU	1199	Air Temperature Door Control
B9	0.35 WH/BK	1236	Passenger Air Temperature Door Control
B10	0.35 TN	2273	Mode Door Control A
B11	-	-	Not Used
B12	0.35 D-GN	1614	Recirculation Door Control B

Connector Part Information

OEM: 12110088
Service: 15306210
Description: 24-Way F Micro-Pack 100 Series (GY)

Terminal Part Information

Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit