Body Control Module (BCM) X1

WARNING: This page is about a different car, the 2016 Chevrolet Impala Limited. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) X1 Connector End View

Courtesy of GENERAL MOTORS COMPANY

Pin	Wire	Circuit	Function
1	-	-	Not Used
2	0.35 WH	1390	Off/Run/Crank Voltage
3	0.35 GY	1884	Cruise Control Switch Signal
4	0.35 WH/BK	1073	5-Volt Reference
5	0.35 L-GN	1715	Windshield Wiper Switch High Signal
6	0.35 D-BU	1796	Steering Wheel Controls Signal
7	-	-	Not Used
8	0.35 BK/WH	1251	Ground
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 L-BU/WH	1414	Left Turn Signal Switch Signal
16	0.35 D-BU/WH	1415	Right Turn Signal Switch Signal
17	0.35 PU	1375	Steering Wheel Control Supply Voltage
18	0.35 PU	524	Headlamp Dimmer Switch High Beam Signal
19	0.35 TN	2144	Hazard Switch Signal
20	-	-	Not Used
21	0.35 BN	4	Accessory Voltage
22-23	-	-	Not Used
24	0.35 PK	94	Windshield Washer Switch Signal
25	0.35 BN	1356	Flash To Pass Switch Signal
26	0.5 D-GN/WH	1135	A/T Shift Lock Control Solenoid Supply Voltage (without D55)
27	-	-	Not Used

Connector Part Information

Harness Type: Steering Column
OEM Connector: 15482789
Service Connector: 88988838
Description: 27-Way F HIT Series (L-GN)

Terminal Part Information

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