HVAC Control Module C1

WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module C1 Connector End View

Courtesy of GENERAL MOTORS CORP.

HVAC Control Module C1 Connector & Terminal Parts Information

Connector Part Information

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

Terminal Part Information

Pins: 1, 3, 4, 5, 7, 9, 10, 11, 15, 18
Terminal/Tray: 7116-4618-02/14
Core/Insulation Crimp: P/P
Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C1 Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	GY	598	5-Volt Reference
2	-	-	Not Used
3	WH	193	Rear Defog Relay Control
4	D-GN	5060	Low Speed GMLAN Serial Data
5	D-GN	5060	Low Speed GMLAN Serial Data
6	-	-	Not Used
7	GY/PK	754	Blower Motor Speed Control
8	-	-	Not Used
9	OG/PK	1840	Battery Positive Voltage
10	GY/BK	1798	Low Reference
11	BK	350	Ground
12-14	-	-	Not Used
15	WH/BK	5515	Air Temperature Motor Control
16-17	-	-	Not Used
18	PK	339	Ignition 1 Voltage