Body Control Module (BCM) C3

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) C3 Connector End View

Courtesy of GENERAL MOTORS CORP.

Computer/Integrating Systems Connector End Views

Connector Part Information

OEM: HITPB-25-C-LE
Service: See Catalog
Description: 25-Way F (BU)

Terminal Part Information

Pins: 1, 2, 3, 5
Terminal/Tray: SNAC-A061T-M2.8/20
Core/Insulation Crimp: E/A
Release Tool/Test Probe: 12094429/J-35616-4A (PU)

Pins: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 25
Terminal/Tray: SNAC3-A021T-M0.64/20
Core/Insulation Crimp: J/J
Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)

Body Control Module (BCM) C3

Pin	Wire Color	Circuit No.	Function
1	BK	450	Ground
2	D-GN/PU	1940	Battery Positive Voltage (Early Production)
2	D-GN/GY	1940	Battery Positive Voltage (Late Production)
3	PK/GY	3040	Battery Positive Voltage
4	-	-	Not Used
5	BK	450	Ground
6-7	-	-	Not Used
8	TN/BK	2500	High Speed GMLAN Serial Data Bus +
9	TN	2501	High Speed GMLAN Serial Data Bus -
10	D-GN	5060	Low Speed GMLAN Serial Data
11	PK	1444	I/P Dimming Signal
12	OG/WH	812	12 Volt Reference
13	L-BU/YE	5361	Brake Apply Sensor Signal
14	L-BU/BK	853	Brake Apply Sensor Low Reference
15	GY	5381	Brake Apply Sensor 5 Volt Reference
16	TN/BK	2500	High Speed GMLAN Serial Data Bus +
17	TN	2501	High Speed GMLAN Serial Data Bus -
18	YE	1491	Backlight Lamp Control
19	OG/YE	5727	High Speed GMLAN Serial Data Wake Up
20	-	-	Not Used
21	OG	192	Front Fog Lamp Switch Signal (T96)
22	D-GN/WH	7158	Cruise Control Indicator Dimming Signal
23-24	-	-	Not Used
25	PU/WH	1382	LED Dimming Signal