Body Control Module (BCM) X3

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) X3 Connector End View

Courtesy of GENERAL MOTORS COMPANY

Pin	Wire	Circuit	Function
1	0.8 BK	450	Ground
2	0.8 D-GN/PU	1940	Battery Positive Voltage
3	0.8 PK/GY	3040	Battery Positive Voltage
4	-	-	Not Used
5	0.8 BK	450	Ground
6-7	-	-	Not Used
8	0.35 TN/BK	2500	High Speed GMLAN Serial Data Bus +
9	0.35 TN	2501	High Speed GMLAN Serial Data Bus -
10	0.35 D-GN	5060	Low Speed GMLAN Serial Data
11	0.35 PK	1444	I/P Dimming Signal
12	0.35 OG/WH	812	12-Volt Reference
13	0.35 L-BU/YE	5361	Brake Apply Sensor Signal
14	0.35 L-BU/BK	853	Brake Apply Sensor Supply Voltage
15	0.35 GY	5381	Brake Apply Sensor Low Reference
16	0.35 TN/BK	2500	High Speed GMLAN Serial Data Bus +
17	0.35 TN	2501	High Speed GMLAN Serial Data Bus -
18	0.35 YE	1491	Backlight Lamp Control
19	0.35 OG/YE	5727	High Speed GMLAN Serial Data Wake Up
20	-	-	Not Used
21	0.35 OG	192	Front Fog Lamp Switch Signal
22	0.35 D-GN/WH	7158	Cruise Control Indicator Dimming Signal
23-24	-	-	Not Used
25	0.35 PU/WH	1382	LED Dimming Signal

Connector Part Information

Harness Type: Instrument Panel
OEM Connector: HITPB-25-C-LE
Service Connector: 88988840
Description: 25-Way F HIT Series (L-BU)

Terminal Part Information

Pins: 1-3, 5
Terminated Lead: 13327199
Release Tool: J-38125-12A
Diagnostic Test Probe: J-35616-35 (VT)
Terminal/Tray: SNAC-A061T-M2.8/20
Core/Insulation Crimp: E/A

Pins: 8-19, 21, 22, 25
Terminated Lead: 13575870
Release Tool: J-38125-12A
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: SNAC3-A021T-M0.64/20
Core/Insulation Crimp: J/J