Body Control Module (BCM) X5

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) X5 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	1 YE	18	Left Rear Stop/Turn Lamp Supply Voltage
2	1 D-GN	19	Right Rear Stop/Turn Lamp Supply Voltage
3	-	-	Not Used
4	0.5 L-BU/WH	1314	Left Front Turn Signal Lamp Supply Voltage
5	0.5 L-BU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage
6	0.35 L-BU/WH	6311	Cruise/ETC/TCC Brake Signal
7	0.35 D-BU	38	Backup Lamp Relay Control (Early Production with YE9/Y91)
8	0.5 PK	5076	Current Sensor Supply Voltage (10 Series Except MEX)
9	0.5 WH	5075	Current Sensor Signal (10 Series Except MEX)
10	0.5 BN	5077	Low Reference (10 Series Except MEX)
11	0.35 D-BU	38	Backup Lamp Relay Control
12	-	-	Not Used
13	0.35 OG	300	Ignition 3 Voltage
14	0.35 WH	2283	12-Volt Reference (NQF/NQH/10 Series Except MEX/8S8)
15	0.35 PU	5531	Hood Closed Switch Signal (AP3/AP8)
16	0.35 L-BU	1134	Park Brake Switch Signal (Park brake systems only)
17	-	-	Not Used
18	0.35 TN	28	Horn Relay Control (Except MEX)
19	0.35 YE	6812	Out of Park Signal (YE9/HP2)
20	0.35 GY	91	Windshield Wiper Switch Signal 2
21	0.35 TN	860	Front Windshield Wiper Switch High Signal Control
22	-	-	Not Used
23	0.35 PK/WH	1970	Headlamp Low Beam Relay Control
24	0.35 D-BU	45	Park Lamp Relay Control
25	-	-	Not Used

Connector Part Information

OEM: 15480179
Service: 88988837
Description: 25-Way F HIT Series (BN)

Terminal Part Information

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

Pins: 6, 7-11, 13-16, 18-21, 23-24
Terminal/Tray: SNAC3-A021T-M0.64/20
Core/Insulation Crimp: J/J
Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)