Fix Your Truck’s Electrical Headaches for Good
Are you chasing down bizarre electrical issues in your 2003-2007 GMC Sierra 1500? One day the power windows work, the next they don’t. Maybe your A/C blower motor has a mind of its own, or a persistent airbag light refuses to go away. As a technician with over two decades of experience, I’ve seen these exact symptoms hundreds of times, and they almost always point to a failing Body Control Module (BCM). This isn’t just an inconvenience; it’s the central command for your truck’s essential body functions. This 2003-2007 Sierra 1500 BCM, part number 10367690, is the definitive, hassle-free solution.
We offer a professional cloning service that transfers all the critical data from your original module to this replacement unit. This means no expensive trips to the dealership for programming. It arrives at your door ready for a true plug-and-play installation, restoring full functionality to your vehicle’s lighting, security, locks, and climate control systems. Get your truck back to being the reliable workhorse you depend on.
A Technician’s Notebook: The Misleading No-Start
A 2005 Silverado was towed into my bay with a classic no-start, no-crank condition. The owner had already replaced the battery, starter, and ignition switch. He was frustrated and out of money. The security light was flashing on the dash, which was the key clue. The BCM is the gatekeeper for the PassLock security system. After confirming power and ground to the module, we scanned it and found communication loss codes. A faulty BCM was preventing the security handshake with the PCM. By installing a cloned BCM, we preserved the original key data, and the truck fired right up. It’s a perfect example of how a 2003-2007 Sierra 1500 BCM failure can mimic other, more expensive component failures.
Is Your Sierra Showing These Symptoms?
- ✔ The security or anti-theft light is on, causing a no-start condition.
- ✔ Power windows, door locks, or interior lights work intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor runs erratically.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Wipers operate randomly or won’t turn off.
- ✔ Communication DTCs (U-codes) are present when scanning the vehicle.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work. This prevents electrical shorts and helps reset the system.
- ✔ Locate the BCM: On most GMT800 trucks and SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large electrical connectors.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, the module can be unclipped or unbolted from its mounting bracket.
- ✔ Install the New Module: Seat the replacement module into the bracket and firmly plug in all the electrical connectors until they click into place.
- ✔ Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Verified Vehicle Compatibility
This module is a direct fit for a wide range of General Motors trucks and SUVs. It is interchangeable with part numbers 15116066, 15136225, 15198116, 15064149, 15194170, and more. While this is a perfect fit for a 2003-2007 Sierra 1500 BCM replacement, it also fits the following models:
- Chevrolet Avalanche, Silverado, Suburban, Tahoe, Express Van (2003-2007)
- GMC Sierra, Yukon, Yukon XL, Savana Van (2003-2007)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Note: Always verify your specific part number or consult the detailed fitment list to ensure perfect compatibility. Some models have specific option requirements.
Frequently Asked Questions
How does the cloning service work?
After you place your order, you will send us your original Body Control Module. We then transfer its unique programming and vehicle-specific data to the replacement unit. This ensures 100% compatibility with your existing keys and options, eliminating the need for dealer programming.
Do I get my old BCM back?
Yes, absolutely. Your original module is always returned to you along with the newly programmed replacement. We do not keep your old part, and there is no core charge.
Will I need any special tools for installation?
For the physical installation, only basic hand tools are typically needed. However, in some cases, an airbag light may appear. If this happens, a professional diagnostic scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems.
What is the Brake Pedal Position Relearn?
On some models, after installing the new BCM, the brake pedal position sensor may need to be recalibrated. This ensures your brake lights and traction control system function correctly. This procedure may also require a compatible scan tool.
Is this part guaranteed?
Yes, this BCM is built to meet or exceed OEM specifications and comes with a one-year warranty for your peace of mind.