Restore Full Electrical Function to Your Truck with a Pre-Programmed BCM
If you’re dealing with a frustrating array of electrical problems in your GMC Sierra 2500, from flickering lights and a dead radio to a persistent airbag warning, 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 wreak havoc. This replacement module, equivalent to part number 15926094, is the definitive solution. We pre-program it to your truck’s specific VIN, ensuring it works perfectly right out of the box, with no expensive dealership programming required.
This isn’t just a replacement part; it’s a restoration of your vehicle’s reliability and functionality. The BCM governs everything from your power windows and door locks to the HVAC blower and security system. By installing this VIN-programmed module, you’re not just fixing a symptom—you’re addressing the root cause of those electrical gremlins and preventing future failures. Get your truck back to operating the way it was meant to with a dependable, easy-to-install solution.
Case Study: A Tricky Diagnosis
A 2009 Sierra 2500 HD came into my bay with a classic case of what the owner called ‘automotive poltergeists.’ The dome light would stay on, the driver’s side window wouldn’t roll down, and the radio would cut out intermittently. He had already replaced the battery and checked fuses. After hooking up my scanner, I saw a slew of communication loss codes pointing to the BCM. A quick check of the main connector on the old BCM revealed slight corrosion on a ground pin—a common issue on these work trucks. This had caused an internal short. We installed one of our VIN-programmed modules, and in less than 10 minutes, every single issue was resolved. It’s a textbook example of how a single component, the 2007-2011 Sierra 2500 BCM, can solve a dozen problems at once.
Is Your Sierra Exhibiting These Electrical Gremlins?
A faulty BCM often creates a pattern of seemingly unrelated issues. If your truck is showing these signs, it’s time for a replacement:
- ✔ Non-functional or intermittent power windows, door locks, or mirrors.
- ✔ HVAC controls are unresponsive, or the blower motor works only on high or not at all.
- ✔ An active airbag light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ The security system acts up, causing no-start conditions or random alarm activation.
- ✔ Erratic interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Communication loss codes with other modules on the vehicle network.
Your Quick-Start Installation Guide
Installing your new BCM is a straightforward job that most DIYers can complete in their driveway. No complex procedures are needed for basic operation.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: Find the module under the driver’s side dashboard, usually to the left of the steering column. It’s held in by simple clips or a few small bolts.
- Swap the Modules: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove the old module and clip the new, pre-programmed one into place.
- Reconnect and Test: Securely plug all connectors into the new BCM. Reconnect the battery terminal and start the truck. Test all functions like lights, windows, locks, and the HVAC system to confirm the fix.
- Post-Install Checks: In some cases, an airbag light may persist. This requires an ‘SDM Key Sync’ with a capable bi-directional scan tool. Similarly, a brake pedal position relearn may be needed. These are not always required but are good to be aware of.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers including 15926094, 25835966, 25844480, 20939137, and 22860591. Please verify your part number or contact us with your VIN to ensure compatibility. This module fits the following models:
- GMC Sierra 1500/2500/3500 & Denali: 2007-2013
- Chevrolet Silverado 1500/2500/3500: 2007-2013
- Chevrolet Avalanche 1500: 2007-2011
- Chevrolet Suburban 1500/2500: 2007-2011
- Chevrolet Tahoe: 2007-2011
- GMC Yukon & Yukon XL 1500/2500: 2007-2011
- Cadillac Escalade, ESV, EXT: 2007-2011
Frequently Asked Questions
Does this BCM really not require a trip to the dealer?
That’s correct. We program the module to your vehicle’s VIN before shipping. This ensures it communicates with your truck’s other systems correctly, allowing for a true plug-and-play installation without needing a dealership’s expensive scan tool.
What is a core charge? Do I need to send my old part back?
There is absolutely no core charge on this module. You can keep your old part, discard it, or save it for diagnostics. No need to worry about returns or extra fees.
My airbag light is on. Will this fix it?
A faulty BCM is a common cause for the airbag light and DTC B1001. Replacing it often resolves the issue. However, after installation, you may need a technician with a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and clear the light.
Where is the BCM located on my 2007-2011 Sierra 2500?
The BCM is located inside the cabin, under the driver-side dashboard. It’s typically positioned to the left of the steering column and is accessible after removing the lower dash panel.
What tools do I need for the installation?
For most installations, you’ll only need basic hand tools like a socket set to disconnect the battery and possibly a trim removal tool or a small screwdriver to access the BCM behind the dash panel. No special programming tools are required.