Body Control Module (BCM) C3

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

Fig 1: BCM C3 Connector End View

Courtesy of GENERAL MOTORS CORP.

BCM C3 Connector Part Information

Connector Part Information

OEM: 638397-1
Service: 88988876
Description: 18-Way F Unsealed (BK)

Terminal Part Information

Pins: 4- 8, 10- 18
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

BCM C3 Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1-3	-	-	Not Used
4	L-BU/WH	1414	Left Turn Signal Switch Signal
5	L-BU	1714	Windshield Washer Switch Low Signal
6	D-BU/WH	658	Cruise Control Switch Signal
7	WH	103	Headlamp Switch Headlamps On Signal
8	BN/WH	301	Park Lamp Switch On Signal
9	-	-	Not Used
10	L-BU	1872	Exterior Lamps Off Input
11	OG	192	Front Fog Lamp Switch Signal
12	PU	524	Headlamp Dimmer Switch High Beam Signal
13	PK	94	Windshield Washer Switch Signal
14	BN	1356	Flash To Pass Switch Signal
15	BK/WH	1251	Ground
16	TN	2144	Hazard Switch Signal
17	D-BU/WH	1415	Right Turn Signal Switch Signal
18	L-GN	1715	Windshield Washer Switch High Signal