Body Control Module (BCM) X1

WARNING: This page is about a different car, the 2014 GMC Sierra 3500 HD, 2014 GMC Sierra 2500 HD, 2014 Chevrolet Silverado 3500 HD, and 2014 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Connector Part Information

Harness Type: Steering Column
OEM Connector: 15482789
Service Connector: 88988838
Description: 27-Way F Receptacle 0.64 2.8 (L-GN)

Terminal Part Information

Pins: 1-9, 14-21, 23-26
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) X1

Pin	Wire	Circuit	Function
1	-	-	Not Used
2	0.35 PK/BK	1020	Ignition 3 Voltage
3	0.35 GY	1884	Cruise Control Switch Signal (K34)
4	0.35 WH	530	5-Volt Reference
5	0.35 L-GN	1715	Windshield Wiper Switch High Signal
6	0.35 L-GN	6818	Steering Wheel Control Switch Signal (UK3)
7	-	-	Not Used
8	0.35 TN/BK	6009	Low Reference
9	0.35 L-BU	1714	Windshield Wiper Switch Low Signal
10-13	-	-	Not Used
14	0.35 PK	3	Ignition 1 Voltage
15	0.35 D-GN	663	Hazard Switch Left Turn Signal
16	0.35 TN	664	Hazard Switch Right Turn Signal
17	0.35 PK	1444	12-Volt Reference
18	0.35 YE	525	Headlamp Dimmer Switch Signal
19	0.35 WH	111	Hazard Switch Signal
20	0.5 PU	5526	Tap Up/Tap Down Switch Signal (MYC, MYD, M99 or MW7)
21	0.35 BN	4	Accessory Voltage
22	-	-	Not Used
23	0.35 L-BU	553	Tow/Haul Switch Signal (MYC, MYD, M99 or MW7)
24	0.35 PK	94	Windshield Washer Switch Signal
25	0.35 YE/BK	307	Headlamp Flash to Pass Signal
26	0.35 TN/WH	816	A/T Shift Lock Solenoid Supply Voltage
27	-	-	Not Used