Restore Full Functionality to Your GM Vehicle
Are you chasing electrical gremlins in your 2008-2012 GMC Savana 3500? Intermittent power windows, flickering dash lights, a security system that has a mind of its own, or even a frustrating no-start condition can often be traced back to one component: a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable workhorse into a source of constant headaches. It’s the central hub for your vehicle’s body electronics, and when it starts to fail, it creates a cascade of confusing and unpredictable problems.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take the biggest challenge out of the repair by pre-programming this BCM specifically for your vehicle using your VIN. This means you get a module with the latest GM software updates, ready for installation right out of the box. You can bypass the expensive trip to the dealership for programming, saving you significant time and money. This is the same process we use in the shop to get our customers’ vehicles back on the road quickly and reliably.
A Technician’s Notebook
A customer brought in his 2011 Savana 3500 work van last month with a truly bizarre set of symptoms. The radio would turn on and off by itself, the driver’s side power lock was dead, and occasionally, the security light would flash, preventing the van from starting. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I found multiple ‘loss of communication’ codes with various modules. This pointed directly to the BCM. Instead of a costly new unit from the dealer, we used one of our VIN-programmed modules. The installation took less than an hour, and every single electrical issue was resolved instantly. It’s a classic case where one part, the Savana 3500 Body Control Module, was the root of all the chaos.
Is Your Savana Van Showing These Symptoms?
- ✔ Erratic or non-functional interior/exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The anti-theft or security system engaging randomly, causing a no-start condition.
- ✔ The horn honking unexpectedly or the key fob not responding.
- ✔ False warnings appearing on the instrument cluster.
- ✔ Communication error codes (U-codes) stored when scanned.
Your Straightforward BCM Installation Guide
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most Savana and Express vans, the BCM is located behind the center dash area, often near the bottom of the instrument panel. You may need to remove a lower trim panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Procedures: After installation, two critical steps are required. You must perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible scan tool to sync the airbag system. Additionally, a ‘Brake Pedal Position Sensor Calibration’ may be necessary to ensure proper brake light and stability control function.
Verified Compatibility for Your GM Vehicle
This BCM, part number 25910474, is a direct replacement for a wide range of GM vehicles and supersedes many previous part numbers. While this listing is focused on the Savana 3500 Body Control Module, please verify your vehicle in the list below or match your original part number to ensure perfect fitment. Providing your VIN at checkout is the best way to guarantee you receive the correct, programmed part.
Replaces 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
Fits Models Including: Acadia (07-12), Avalanche (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/XL (10). (Please check the detailed fitment data for specific options and IDs).
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is the only way we can program the BCM with the correct software and vehicle-specific options. This step is what makes the installation process so much smoother and prevents a trip to the dealer.
Is this a difficult part to replace for a DIYer?
For someone with basic mechanical skills, it’s very manageable. The main challenge is accessing the module, which is typically behind a dash panel. The physical swap is just a few connectors and bolts. The most important part is having a capable scan tool for the post-installation procedures.
What happens if I don’t do the airbag (SDM) and brake pedal procedures?
You will likely have a persistent airbag warning light on your dash, and the airbag system may not function correctly in an accident. The brake pedal calibration ensures your brake lights and stability control system work as intended. These are critical safety steps that should not be skipped.
Will this fix my ‘Service StabiliTrak’ message?
It can, but it’s not a guarantee. A failing BCM can cause StabiliTrak errors due to lost communication or incorrect data from sensors like the brake pedal position sensor. However, other issues can also cause this message. Proper diagnosis is key, but if you have other BCM-related symptoms, this is a likely solution.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit is verified to be fully functional before being programmed with the latest GM software for your specific vehicle, ensuring OEM-level performance and reliability.