HVAC Control Module X1

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

Fig 1: HVAC Control Module X1 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.35 GY	705	5-Volt Reference
2-3	-	-	Not Used
4	0.35 D-GN	5060	Low Speed GMLAN Serial Data
5	-	-	Not Used
6	0.35 BN	247	Medium Blower Motor Control
7-8	-	-	Not Used
9	0.35 RD/WH	340	Battery Positive Voltage
10	0.35 YE	61	Low Reference
11	0.35 BK/WH	451	Ground
12-15	-	-	Not Used
16	0.5 GY/BK	754	Blower Motor Speed Control
17	-	-	Not Used
18	0.35 PK	1539	Run/Crank Ignition 1 Voltage

Connector Part Information

OEM: 7283-4544-30
Service: 89047360
Description: 18-Way F (BK)

Terminal Part Information

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