Restore Full Functionality to Your GM Truck or SUV
If you’re dealing with baffling electrical issues in your 2007-2013 GM vehicle, you’re not alone. As the central command for your vehicle’s body electronics, a failing Body Control Module (BCM) can cause a cascade of frustrating problems. This replacement GM Body Control Module, part number 15263363 (interchangeable with 25844480 and others), arrives fully programmed to your vehicle’s VIN. This means no expensive trips to the dealership for programming—it’s a true plug-and-play solution designed to get you back on the road with confidence.
Case Study: The Ghost in the Machine
I once had a 2009 Silverado 2500 in my bay that was driving the owner crazy. The dashboard would flicker randomly, the radio would cut out, and the airbag light was stubbornly on with a B1001 code. He had already replaced the battery and checked the alternator. After hooking up my scanner, I saw multiple communication loss codes pointing towards the BCM. These modules are notorious for internal connection failures over time. We installed one of our pre-programmed units, and while most issues vanished, the airbag light remained. This is a key diagnostic point: the new BCM needed to be synced with the existing SDM (airbag module). Using the ‘Setup SDM Primary Key’ function on my scanner, the handshake was complete in 30 seconds, the light went out, and the truck was finally free of its electrical ghosts. This is why pre-programming is just the first step; understanding the whole system is key to a complete repair.
Is Your Truck or SUV Showing These Electrical Gremlins?
A faulty GM Body Control Module can manifest in numerous ways. If you’re experiencing any of the following, a BCM replacement is the likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ HVAC system failures, such as a blower motor that won’t turn on or erratic temperature control.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system alerts, unexpected stalling, or a no-start condition due to communication errors.
- ✔ Wipers, power mirrors, or other accessories behaving erratically or not working at all.
- ✔ A dashboard lit up with various communication-related DTCs.
Your 5-Minute Path to a Fully Functional Vehicle
Installation is a straightforward process that most DIYers can complete with basic tools. The BCM is typically located under the driver’s side dashboard near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: Find the BCM under the dash. It will have several large multi-pin connectors attached to it.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Firmly reconnect all electrical harnesses until they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, HVAC, and wipers to confirm the repair.
Post-Installation Note: In some cases, an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be necessary. If the airbag light is on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. This is a simple procedure that syncs the modules. Always consult a service manual for model-specific requirements.
Verified Fitment For Your GM Vehicle
This module is a direct replacement for a wide range of popular GM models and is interchangeable with part numbers 25835966, 15263363, 15943678, 20939137, 22860591, and more. Please verify your part number or contact us for fitment confirmation.
Chevrolet: Avalanche 1500 (2007-2011), Silverado 1500 (2007-2011), Silverado 2500/3500 (2007-2013), Suburban 1500/2500 (2007-2011), Tahoe (2007-2011)
GMC: Sierra 1500 (2007-2011), Sierra 2500/3500 (2007-2013), Sierra Denali (2007-2013), Yukon (2007-2011), Yukon XL 1500/2500 (2007-2011)
Do I need to take this part to a dealer for programming?
Do I need to take this part to a dealer for programming?
No. We program the module to your vehicle’s specific VIN before shipping. This allows for a simple, plug-and-play installation without needing any special dealership tools for programming.
What if my airbag light is on after installation?
This is a common and expected situation. It means the new BCM needs to be electronically introduced to the vehicle’s airbag system (SDM). A mechanic with a bi-directional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure, which typically takes only a few minutes.
Is there a core charge for my old part?
Absolutely not. There is no core charge, and you do not need to send your old module back to us. Keep your original part with no hassle.
What tools are required for installation?
For most models, you’ll only need basic hand tools, such as a socket set or a screwdriver, to access the panel under the steering column and remove the BCM. The entire process usually takes less than 15 minutes.
Will this fix my intermittent HVAC blower?
Yes, in many cases. The BCM directly controls the HVAC system’s logic, including the blower motor relay. If you’ve already checked the blower motor and resistor and they are good, a faulty BCM is a very common cause of this issue.