Fix Your Truck’s Electrical Headaches for Good
If you’re dealing with a 2003-2007 GMC Sierra 1500 that seems to have a mind of its own—with flickering lights, a dead HVAC system, or power windows that refuse to work—the Body Control Module (BCM) is the most likely culprit. As the central command center for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated issues. This replacement BCM, part number 10367690, is the definitive solution. We pre-program it to your truck’s specific VIN, so it arrives ready for a fast, plug-and-play installation, getting you back on the road without a costly trip to the dealership.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. Over my 20 years of diagnostics, I’ve seen these modules cause some of the most confusing problems for owners and even other technicians. Here are the most common signs that your BCM needs replacement:
- ✔ Intermittent or total failure of power windows, door locks, or interior dome lights.
- ✔ The HVAC and climate control system is unresponsive, or the blower motor works sporadically.
- ✔ Your vehicle’s security system acts up, preventing the engine from starting (no-start condition).
- ✔ The airbag warning light is illuminated on the dashboard, often with a diagnostic trouble code (DTC) like B1001.
- ✔ Erratic behavior from windshield wipers or exterior lighting.
- ✔ Communication errors or a host of B-series (Body) or U-series (Network) trouble codes stored in the system.
A Technician’s Notebook: The Haunted 2005 Sierra
I once had a 2005 Sierra 1500 roll into my bay that the owner swore was haunted. The radio would change stations, the dome light would flicker at random, and sometimes the driver’s side window wouldn’t roll down. He’d already replaced the battery and checked all the fuses. A quick scan showed a dozen intermittent communication codes. Instead of chasing each individual problem, I went straight for the BCM. These units are notorious for internal solder joint failures that cause unpredictable grounding and power issues. After installing a VIN-programmed BCM, every single one of his truck’s ‘haunting’ electrical gremlins vanished. It’s a classic example of how one central component can create widespread chaos.
A Straightforward Guide to Your 2003-2007 Sierra 1500 BCM Installation
One of the best parts about this solution is its simplicity. You don’t need to be a master mechanic to get this job done. In most cases, it takes less than 15 minutes.
- Safety First: Before you begin, disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s electronic systems.
- Locate the BCM: On most 2003-2007 Sierra 1500 models, the BCM is located under the driver’s side dashboard, to the left of the steering column. It’s a black box with several large multi-pin connectors.
- Swap the Modules: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Once unplugged, remove the old module from its mounting bracket and install the new one in its place.
- Reconnect and Test: Securely plug the connectors into your new, pre-programmed BCM. Reconnect the negative battery terminal. Start the truck and test all functions—windows, locks, lights, wipers, and HVAC—to confirm the repair.
Verified Vehicle Compatibility
This module is a direct replacement for part number 10367690 and is interchangeable with several other part numbers, including 15116066, 15136225, and 15198116. It is guaranteed to fit the following models (Crew Cab options specified):
SIERRA 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
This module also fits a wide range of other GM trucks and SUVs from 2002-2007, including the Avalanche, Suburban, Tahoe, Yukon, Escalade, and Hummer H2. Please verify your part number or contact us with your VIN to ensure perfect fitment.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming after installation?
No. This Body Control Module comes pre-programmed to your vehicle’s VIN. It’s designed for plug-and-play installation. In some rare cases, if the airbag light remains on, a simple ‘Setup SDM Primary Key’ procedure may be needed with a high-level scan tool, but this is not typically required.
Is there a core charge for my old part?
Absolutely not. There is no core charge on this BCM. You can keep your old part or recycle it at your convenience without the hassle of sending it back.
Where exactly is the BCM located on my Sierra?
On the 2003-2007 GMC Sierra 1500, you will find the BCM mounted under the driver-side dashboard, near the steering column. It is typically held in place by simple clips or a couple of small bolts.
Will this fix my airbag light?
A faulty BCM is a common cause of an illuminated airbag light, often with code B1001. Replacing the BCM will often resolve this issue. If the light stays on after installation, it indicates the BCM and the airbag’s Sensing and Diagnostic Module (SDM) need to be synced, a procedure a qualified shop can perform.
What if I have other electrical problems?
The BCM controls a vast number of your truck’s accessories. If you have multiple, seemingly unrelated electrical issues, a faulty BCM is the most probable single point of failure. This part is designed to restore full functionality to those systems.