Body Control Module (BCM) X1

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. 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 CORP.

Pin	Wire	Circuit	Function
1	0.35 L-BU/BK	747	Left Rear Door Ajar Switch Signal (Sedan)
2	-	-	Not Used
3	0.35 PU	5531	Hood Closed Switch Signal (AP8)
4	0.35 PK/BK	109	Hood Ajar Switch Signal (AP8)
5	-	-	Not Used
6	0.35 WH	682	Door Lock Lock/Unlock Signal
7	0.35 WH	682	Door Lock Lock/Unlock Signal
8	0.35 WH	1080	Park Lamp Relay Control
9-12	-	-	Not Used
13	0.35 PK	849	Brake Fluid Level Sensor Signal
14	0.35 L-BU	1134	Park Brake Switch Signal
15	0.35 YE	5199	Run/Crank Relay Coil Control
16	0.35 WH	193	Rear Defog Relay Control
17	0.5 D-BU	15	Right Front Turn Signal Lamp Supply Voltage
18	0.35 D-GN	5060	Low Speed GMLAN Serial Data
19	0.35 TN/WH	746	Right Front Door Ajar Switch Signal
20	0.35 L-GN/BK	748	Right Rear Door Ajar Switch Signal (Sedan)
21	-	-	Not Used
22	0.35 GY/BK	745	Left Front Door Ajar Switch Signal
23-25	-	-	Not Used
26	0.35 L-GN	1478	Coolant Level Switch Signal (LNF)
27-30	-	-	Not Used
31	0.35 WH	5065	CHMSL Relay Coil Supply Voltage
32	-	-	Not Used
33	0.35 D-GN/WH	1135	A/T Shift Lock Control Solenoid Supply Voltage (MN5/MX0)
34	-	-	Not Used
35	0.35 L-BU	14	Left Front Turn Signal Lamp Supply Voltage
36	0.35 D-GN	5060	Low Speed GMLAN Serial Data (UE1)
37-39	-	-	Not Used
40	0.35 L-BU	1788	Traction Control Switch Signal (JL4/JL9)
41-43	-	-	Not Used
44	0.35 TN/WH	1969	Headlamp High Beam Relay Control
45-46	-	-	Not Used
47	0.5 YE	196	Windshield Wiper Motor Park Switch Signal
48-50	-	-	Not Used
51	0.35 D-GN	113	Windshield Wiper Switch Signal
52-53	-	-	Not Used
54	0.35 YE	317	Fog Lamp Relay Control (T37)
55	0.35 OG/BK	744	Rear Compartment Lid Ajar Switch Signal
56	-	-	Not Used
57	0.35 BN	253	Trunk Release Relay Control
58-59	-	-	Not Used
60	0.35 TN	28	Horn Relay Control
61	0.5 BK	1250	Ground
62	0.35 RD/WH	1240	Battery Positive Voltage (without LNF)
63	0.35 GY	596	5-Volt Reference - 1 (without LNF)
64	0.5 BK	650	Ground (without LNF)
65-66	-	-	Not Used
67	0.35 YE/BK	61	Low Reference
68	0.35 WH	5075	Current Sensor Signal (without LNF)
69	-	-	Not Used
70	0.35 D-GN/WH	636	Ambient Air Temperature Sensor Signal
71	0.35 L-GN/BK	592	DRL Relay Control
72	-	-	Not Used

Connector Part Information

OEM: 15393122
Service: 88987847
Description: 72-Way F Micro 64 (GY)

Terminal Part Information

Pins: 1, 6-8, 13-20, 22, 26, 33, 35, 36, 44, 47, 51, 54, 55, 57, 60-68, 70
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Pins: 31
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit