If you’re dealing with bizarre electrical issues in your truck—like headlights with a mind of their own, a dead instrument cluster, or a security light that prevents it from starting—you’ve likely met the frustrating reality of a failing Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen these exact problems on hundreds of GM trucks. The BCM is the central hub for your vehicle’s body electronics, and when it fails, it can cause chaos. This isn’t just an inconvenience; it can be a major safety and reliability issue.
This is your direct-fit, permanent solution. This Body Control Module, compatible with part number 15136225, is specifically designed for your vehicle. The best part? It arrives at your door fully programmed to your truck’s unique Vehicle Identification Number (VIN). This means you can skip the expensive trip to the dealership for programming. You get a reliable part that restores full functionality right out of the box, solving those maddening electrical gremlins and getting your workhorse back to peak performance. This is the fix for the professional mechanic looking for a dependable part and for the DIYer who wants to get the job done right without specialized dealer tools.
Is Your Silverado Showing These Symptoms?
- ✔️ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔️ The security or anti-theft system malfunctioning, causing a no-start condition.
- ✔️ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔️ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔️ Headlights, taillights, or interior lights flickering, staying on, or not working.
- ✔️ Unexplained battery drain that leaves you stranded.
- ✔️ Multiple communication-related Diagnostic Trouble Codes (DTCs).
A Technician’s Notebook: The Case of the Phantom No-Start
A 2005 Silverado 2500 HD was towed into my bay with a classic complaint: “Sometimes it starts, sometimes it doesn’t.” The owner had already replaced the battery and checked the starter. When I connected my scanner, I found no engine codes, but the security light was flashing. Digging deeper, I found communication loss codes with the BCM. After checking the main grounds (a common issue on these trucks), I focused on the module itself. By wiggling the connectors on the BCM under the dash, I could make the security light flicker on and off. The internal circuits were failing intermittently—a textbook failure for a 2003-2007 Silverado 2500 BCM. A new, VIN-programmed module fixed it instantly, saving the customer from hours of further diagnostic costs.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s systems.
- ✔ Locate the BCM: On most Silverado and Sierra 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 Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the old BCM and remove it. Install the new module in its place and securely reconnect all connectors.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test all body functions: lights, locks, windows, wipers, and HVAC.
- ✔ Final Checks: Start the engine. If an airbag light appears, a professional scan tool may be needed to perform the ‘Setup SDM Primary Key’ procedure. This syncs the new BCM with the airbag system. In some cases, a Brake Pedal Position relearn may also be needed.
Verified Vehicle Compatibility
This module is engineered for a precise fit and function in a wide range of General Motors vehicles. While it’s a perfect match for the 2003-2007 Silverado 2500 BCM requirement, it also fits many other models. Please verify your vehicle from the list below. It is a direct replacement for part numbers: 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 10367690, 15064149, 15194170.
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE & ESV & EXT 03-06 Body Control (BCM); (under steering column)
EXPRESS/SAVANA VAN 1500/2500/3500 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
HUMMER H2 04-07 Body Control (BCM); (LH dash)
HUMMER H2 03 Body Control (BCM); ID 8116
SIERRA 1500/2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 1500/2500/3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SIERRA DENALI 03-06 Body Control (BCM); (under steering column)
SILVERADO 1500/2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 1500/2500/3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money on dealer programming fees.
What is a core charge? Do I need to send my old part back?
There is no core charge for this part. You can keep your old module without any extra fees or hassle.
My airbag light came on after I installed the new BCM. Is it defective?
No, this is a normal security feature. The new BCM needs to be synchronized with the airbag’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a professional-grade scan tool to turn off the light.
Where is the BCM located on my 2006 Silverado 2500?
On most 2003-2007 Silverado and Sierra trucks, the BCM is mounted under the driver-side dashboard, near the parking brake pedal and steering column.
Will this fix my intermittent power window and door lock problems?
Yes, the BCM directly controls those functions. If your windows, locks, and lights are acting erratically, a failing BCM is the most common cause, and this part is designed to resolve those specific issues.