Restore Your Van’s Electrical System with a Reliable, Programmed BCM
If you’re dealing with bizarre electrical issues in your 2008-2012 Savana 3500 Van—like flickering dash lights, power windows with a mind of their own, or a security system that acts up randomly—a failing Body Control Module (BCM) is the likely culprit. As a technician with over 20 years of experience, I’ve seen how a faulty BCM can turn a reliable workhorse into a source of constant frustration. This module is the central command for your vehicle’s body electronics, and when it fails, it creates chaos. Don’t waste time and money chasing symptoms. Get a permanent fix with our professionally programmed BCM.
We take the guesswork and hassle out of the repair. Simply provide your vehicle’s VIN during checkout, and we will program this BCM with the latest GM factory software specific to your Savana. This means it arrives ready for installation, saving you a costly trip to the dealership and hours of diagnostic headaches. This is the same process we use in our own repair facility to get our customers’ vehicles back on the road quickly and reliably.
Common Signs of a Failing BCM
A bad BCM can manifest in numerous ways. If your van is showing any of these signs, it’s time to consider a replacement:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power door locks or windows operating intermittently or not at all.
- ✔ The security system engaging without reason or the vehicle not starting due to a security fault.
- ✔ Dashboard warning lights (like the airbag or brake light) staying on.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes, stored in the system.
- ✔ Horn, wipers, or other accessories working sporadically.
From the Diagnostic Bay: The Case of the Unreliable Work Van
A local plumbing company brought in their 2011 Savana 3500. The complaint was a dead battery every few days and a driver’s side power window that worked only when it wanted to. They had already replaced the battery and alternator twice. After hooking up my multimeter, I found a significant parasitic draw. By pulling fuses one by one, I isolated the draw to a circuit controlled by the BCM. The module wasn’t letting certain systems go to ‘sleep’ after the van was turned off. We installed one of our VIN-programmed BCMs, and the draw vanished. The window worked perfectly. The client was thrilled to have their work van back in reliable service, saving them from costly downtime and lost jobs.
A Straightforward Guide to BCM Installation
For the confident DIYer or professional mechanic, swapping the BCM is a manageable job. In most Savana and Express vans, the BCM is located behind the center dash panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. It’s typically mounted to a bracket in the center console area.
- Disconnect and Remove: Unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM onto the bracket and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, wipers, etc.
- Perform Relearn Procedures: Depending on your vehicle, you may need to perform a couple of final relearn procedures as detailed below to ensure full system functionality.
Important Post-Installation Steps
While our programming handles the heavy lifting, some GM vehicles require on-vehicle relearn procedures to sync the new module with other systems. These may include:
- ✔ Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure brake lights and traction control work correctly. This can often be done with a capable bidirectional scan tool.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for a wide range of General Motors vehicles. It is compatible with original 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, and 95151084. Key compatible models include, but are not limited to:
- ✔ 2008-2012 GMC Savana 1500/2500/3500 Vans
- ✔ 2008-2012 Chevrolet Express 1500/2500/3500 Vans
- ✔ 2007-2012 GMC Acadia
- ✔ 2006-2013 Chevrolet Impala
- ✔ 2010 Chevrolet Tahoe & Suburban
- ✔ 2010 Cadillac Escalade
- ✔ And many other GM cars, trucks, and SUVs as listed in the fitment data.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to load the exact, factory-correct software for your vehicle’s specific options and features. This ensures the BCM works correctly right out of the box and communicates properly with your vehicle’s other computers.
Is this a plug-and-play part?
For the most part, yes. We handle the difficult programming. However, as noted above, some vehicles may require simple, on-vehicle relearn procedures for the airbag or brake systems, which may require a scan tool.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. While it can cause warning lights like the airbag light, it is not usually the cause of a check engine light. If you have a check engine light, you should have the codes scanned to diagnose the correct system.
What if my original part number is not 25910474 but is on your list?
That’s perfectly fine. Manufacturers often use many different part numbers for the same component over the years. As long as your original part number is on our cross-reference list, this module is the correct replacement for your vehicle.