WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Body Control Module (BCM) C7 Connector End View

Courtesy of GENERAL MOTORS CORP.

Computer/Integrating Systems Connector End Views

Connector Part Information

OEM: HITPB-28-G-H
Service: See Catalog
Description: 28-Way F (GY)

Terminal Part Information

Pins: 2
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Pins: 7, 9, 22, 25
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) C7

Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	L-BU	1344	Trunk Release Relay Control
3-6	-	-	Not Used
7	L-BU/BK	6692	Left Rear Door Lock Motor Unlock Control
8	-	-	Not Used
9	L-BU/WH	6693	Right Rear Door Lock Motor Unlock Control
10-17	-	-	Not Used
18	D-GN/L-BU	170	Power Window Master Switch Right Rear Up Signal
19	PU	169	Power Window Master Switch Left Rear Down Signal
20	-	-	Not Used
21	D-BU	1307	Power Window Master Switch Lockout Signal
22	D-GN	5060	Low Speed GMLAN Serial Data
23-24	-	-	Not Used
25	PU/WH	1382	LED Dimming Signal
26	PU	171	Power Window Master Switch Right Rear Down Signal
27	L-GN/GY	280	Power Window Master Switch Lockout Right Rear Signal
28	D-GN/RD	168	Power Window Master Switch Left Rear Up Signal

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) C7

Use the Manual With the Right Hardware

When to See a Mechanic

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