Body Control Module (BCM) X4

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) X4 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.8 RD/YE	340	Battery Positive Voltage
2	0.8 TN/PK	5040	Battery Positive Voltage
3	0.8 RD/GN	440	Battery Positive Voltage
4	0.8 RD/WH	1240	Battery Positive Voltage
5	0.8 D-BU/WH	1315	Right Front Turn Signal Lamp Supply Voltage
6	-	-	Not Used
7	0.35 YE/PU	196	Windshield Wiper Motor Park Switch Signal
8	-	-	Not Used
9	0.35 BK	50	Ground
10	0.35 TN/OG	3640	Battery Positive Voltage
11	0.35 D-GN/WH	1317	Fog Lamp Relay Control (T96)
12-13	-	-	Not Used
14	0.35 L-GN	482	Outside Moisture Sensor Signal 2 (CE1)
15	0.35 OG/GY	227	Windshield Washer Relay Control
16	0.35 TN/WH	1969	Headlamp High Beam Relay Control
17	0.35 PK/BK	109	Hood Ajar Switch Signal (AP3)
18	0.35 TN/YE	481	Outside Moisture Sensor Signal 1 (CE1)
19	0.35 D-BU/WH	5985	Accessory Wake up Serial Data
20	0.35 D-BU	6561	Right Cornering Lamp Relay Control (TUH)
21	0.35 PK	1439	Run/Crank Ignition 1 Voltage
22	-	-	Not Used
23	0.35 PU	544	DRL Relay Control
24	0.35 BN	6560	Left Cornering Lamp Relay Control (TUH)
25	-	-	Not Used

Connector Part Information

OEM: HITPB-25-D-K
Service: See Catalog
Description: 25-Way F (BK)

Terminal Part Information

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

Pins: 7, 9-11, 14-21, 24, 25
Terminal/Tray: SNAC3-A021T-M0.64/20
Core/Insulation Crimp: J/J
Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)