WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: BCM C1 & C2 Connector End View

Courtesy of GENERAL MOTORS CORP.

Connector Part Information

OEM: 13545347
Service: See Catalog
Description: 52-Way F Receptacle 0.64, 2.8 (BK)

Terminal Part Information

Pins: 2-40
Terminal: 638551-1/Tray 16
Core/Insulation Crimp: Pins 2-8, 10-18, 25, 26, 31-40: J/J
Core/Insulation Crimp: Pins 9, 22-24, 30: K/K
Release Tool/Test Probe: 15315247/J-35616-64A

Pins: 43, 48
Terminal: Not Serviced in Kit
Core/Insulation Crimp: N/A
Release Tool/Test Probe: N/A

Pins: 42, 44-46, 49-52
Terminal: 1326030-6/Tray 17
Core/Insulation Crimp: Pins 42, 45, 46: E/2
Core/Insulation Crimp: Pins 44, 49-52: E/C
Release Tool/Test Probe: 12094429/J-35616-4A

Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	PK/BK	780	Driver Door Lock Switch Lock Signal
3	D-GN	5512	Liftgate Open Switch Signal
4	D-BU	245	Passenger Door Lock Switch Unlock Signal
5	L-GN/BK	748	Right Rear Door Ajar Switch Signal
6	YE/BK	1181	Right Rear Door Open Switch Signal
7	L-BU/BK	747	Left Rear Door Ajar Switch Signal
8	L-GN	1177	Right Front Door Open Switch Signal
9	L-BU	1134	Park Brake Switch Signal
10	L-BU	2380	Rear Parking Assist Chime Signal (UD7)
11	OG/BK	781	Driver Door Lock Switch Unlock Signal
12-15	-	-	Not Used
16	WH	193	Rear Defog Relay Control
17	TN/WH	746	Right Front Door Ajar Switch Signal
18	D-BU/WH	1179	Left Rear Door Open Switch Signal
19-21	-	-	Not Used
22	L-GN	1123	Door Lock Key Switch Lock Signal
23	WH	5075	Current Sensor Signal
24	PU	1124	Door Lock Key Switch Unlock Signal
25	TN	126	Left Front Door Open Switch Signal
26	GY/BK	745	Left Front Door Ajar Switch Signal
27-29	-	-	Not Used
30	WH	17	Stop Lamp Supply Voltage
31	L-BU	244	Passenger Door Lock Switch Lock Signal
32-34	-	-	Not Used
35	YE	2080	Low Reference
36	PK	2435	Low Reference
37	YE/BK	2079	Driver Heated Seat Cushion Temperature Sensor Signal
38	GY	2434	Passenger Heated Seat Cushion Temperature Sensor Signal
39	TN/WH	2430	Passenger Heated Seat Relay Control
40	PU	2477	Driver Heated Seat Relay Control
41	-	-	Not Used
42	L-GN	24	Backup Lamp Supply Voltage
43	YE	18	Left Rear Stop/Turn Lamp Supply Voltage
43	YE	18	Left Rear Stop/Turn Lamp Supply Voltage
44	GY	8	Instrument Panel Lamp Supply Voltage
45	L-GN	275	Park/Neutral Position Park Signal (E58 w/o AQW)
	L-GN	275	Park/Neutral Position Park Signal (E59 w/o AQW)
	L-GN	275	Park/Neutral Position Park Signal (AQW)
46	TN	694	Driver Door Lock Actuator Unlock Control
47	-	-	Not Used
48	D-GN	19	Right Rear Stop/Turn Lamp Supply Voltage
48	D-GN	19	Right Rear Stop/Turn Lamp Supply Voltage
49	RD/WH	440	Battery Positive Voltage
50	BK	550	Ground
51	TN	294	Door Lock Actuator Unlock Control
52	GY	295	Door Lock Actuator Lock Control

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Body Control Module (BCM) C2

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?