Is Your GM Vehicle Plagued by Electrical Gremlins?
Are you dealing with frustrating and unpredictable electrical issues in your van or SUV? Do your power windows have a mind of their own? Do your interior lights flicker, or does your security system act up for no reason? These aren’t just minor annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, managing everything from your power locks and wipers to your interior lighting and security system. When it starts to fail, it can create a cascade of baffling problems that are difficult to diagnose.
From the Diagnostic Bay
We recently had a 2011 Express 2500 work van come into the shop with a list of bizarre symptoms. The driver complained that the radio would randomly change stations, the dome light would flicker constantly, and sometimes the power door locks wouldn’t respond to the key fob. He had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication fault codes pointing towards the BCM. Instead of a complex wiring repair, the fix was a pre-programmed BCM. Once installed, every single one of the strange electrical issues vanished. It’s a perfect example of how one failing module can make a reliable vehicle feel haunted.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from the radio, climate control, or interior lighting.
- ✔ Dashboard warning lights (like Airbag, ABS, or Traction Control) illuminating without cause.
- ✔ The security system engaging randomly, preventing the vehicle from starting (anti-theft light flashing).
- ✔ Wipers or turn signals operating incorrectly or not at all.
- ✔ Inability for a scan tool to communicate with the module or other vehicle systems.
The Direct-Fit Solution: A Pre-Programmed 2008-2012 Savana 1500 BCM
Don’t let a faulty BCM keep your vehicle off the road or drive you crazy with electrical problems. This replacement Body Control Module is the definitive solution, arriving at your door fully programmed and ready for installation. We take the guesswork and dealership hassle out of the equation. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash the module with the latest, most stable software directly from GM. This ensures that the BCM communicates perfectly with your vehicle’s existing systems right out of the box, restoring functionality and reliability.
Installation and Post-Install Considerations
Physically replacing the BCM is a straightforward process, as it is a direct-fit component. However, after the new module is installed, some vehicles may require additional electronic ‘handshake’ procedures to fully sync with other systems. The two most common are:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper operation of the brake lights and stability control systems.
These procedures are not always required but are important to be aware of. We always recommend consulting a factory service manual or a qualified technician if you are unsure about these final steps. Best of all, there is no core charge. You can keep your old module without the hassle of returning it.
Broad Compatibility Across the GM Lineup
This BCM, part number 25934762, is a versatile component that serves as a direct replacement for a wide range of original part numbers and fits numerous GM vehicles. While it’s a perfect match for the 2008-2012 Savana 1500, it also fits models like the Chevrolet Express, GMC Acadia, Chevrolet Traverse, Cadillac DTS, Chevrolet Impala, and many more. This module replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before the part ships. Just provide your vehicle’s VIN at checkout, and the module will arrive ready to be installed, flashed with the latest GM software for your specific vehicle.
What is a BCM and what does it control?
The Body Control Module (BCM) is a computer that acts as the hub for your vehicle’s body electronics. It manages non-engine related functions like power windows, power locks, the security system, interior and exterior lighting, wipers, and the radio.
Is there a core charge or do I need to send my old part back?
There is absolutely no core charge for this module. You can keep your original part without any need to return it to us.
What if my airbag light is on after I install the new BCM?
This can happen on some models. It means the new BCM needs to be electronically synced with the airbag system’s computer (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, requires a professional-grade diagnostic tool to complete.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your BCM until we receive this information.
Will this module fit vehicles other than a Savana 1500?
Yes, absolutely. This BCM is compatible with a very wide range of GM cars, trucks, and SUVs from this era, including the Express van, Tahoe, Yukon, Acadia, Impala, and many others. Please refer to the detailed fitment list on this page to confirm compatibility.