Body Control Module (BCM) X3

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. 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 CORP.

Pin	Wire	Circuit	Function
1	0.8 BK/WH	1551	Ground
2	0.8 RD/WH	1640	Battery Positive Voltage
3	0.8 RD/WH	4540	Battery Positive Voltage
4	-	-	Not Used
5	0.8 BK/WH	1551	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 D-GN	44	Instrument Panel Lamps Dimmer Switch Signal
12	0.35 OG/WH	812	12-Volt Reference
13	0.35 L-GN	526	Stop Lamp Switch Signal
14	0.35 TN	552	Low Reference
15	0.35 GY	598	5-Volt 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 PU/WH	1382	LED Dimming Signal
19	0.35 L-BU	5986	Communication Enable
20	-	-	Not Used
21	0.35 OG	192	Fog Lamps Enable (T96)
22	0.35 GN/WH	7158	Cruise Control Indicator Dimming Signal
23-25	-	-	Not Used

Connector Part Information

OEM: 15482791
Service: 88988840
Description: 25-Way F HIT Series (L-BU)

Terminal Part Information

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

Pins: 8-19, 21, 22
Terminal/Tray: SNAC3-A021T-M0.64/20
Core/Insulation Crimp: J/J
Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)