Restore Your Van’s Electrical Sanity
If your 2008-2012 GMC Savana 1500 is starting to act possessed—with flickering dash lights, power windows with a mind of their own, or a security light that won’t turn off—you’re likely dealing with a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, the BCM’s health is critical for everything from your interior lights to your door locks. When it fails, it can cause a cascade of confusing and frustrating problems.
Forget the expensive trip to the dealership and the hassle of finding a shop with the right programming tools. We offer a simple, direct solution. This BCM, part number 25847589, arrives at your door fully programmed with the latest GM software updates, matched specifically to your vehicle’s VIN. It’s the most efficient way to get your workhorse van or family hauler back in reliable working order.
Case Study: A Tricky Diagnosis
A customer brought in their 2011 Express van—a sister vehicle to the Savana—with a complaint that stumped two other shops. The radio would randomly turn off, the driver’s side power window worked intermittently, and the anti-theft light would flash, sometimes preventing the van from starting. There were no consistent trouble codes, just a few random U-codes (loss of communication) stored in history. After checking the main power and ground connections to the BCM, we noticed slight voltage drops when wiggling the harness. However, the root cause wasn’t the wiring; it was the BCM itself. Internal circuit board failures, often from years of heat cycles and vibration, can cause these ghost-like issues. We installed a VIN-programmed 2008-2012 Savana 1500 BCM, performed the necessary security and brake sensor relearns, and the van’s electrical gremlins were gone for good. This is a classic failure I’ve seen dozens of times on these GM platforms.
Common Signs of a Failing BCM
- ✔ Erratic power window or door lock operation.
- ✔ Interior dome lights or dashboard lights flickering or not working.
- ✔ The security or anti-theft light stays on, potentially causing a no-start condition.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Communication error codes (U-codes) stored in the system, such as U0140, U0155, or U0164.
- ✔ Wipers activating on their own or not responding to the switch.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. The key is our pre-programming service, which handles the most complex part of the job for you.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting any electrical work.
- Locate the BCM: On the Savana and Express vans, the BCM is typically located in the center of the dashboard, often accessible by removing the lower dash panels or glove box area.
- Swap the Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Unbolt the old BCM, install the new one in its place, and securely reconnect all electrical connectors.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Syncing: This is a critical step. You must perform the ‘Setup SDM Primary Key in BCM’ procedure with a capable scan tool to ensure the airbag system communicates correctly. A brake pedal position sensor relearn may also be required.
IMPORTANT: Post-Installation Requirements
To ensure full safety and functionality after installing your new BCM, two procedures are often necessary:
- Airbag System Sync: The new BCM must be synced with the Sensing and Diagnostic Module (SDM), also known as the airbag module. This requires a diagnostic tool to perform the ‘Setup SDM Primary Key in BCM’ function. Failure to do this will result in a persistent airbag warning light.
- Brake Pedal Position Sensor Relearn: Some vehicles require the brake pedal position sensor to be recalibrated after BCM replacement. This is essential for proper brake light operation and stability control system performance.
If you are not equipped to perform these procedures, we strongly recommend seeking assistance from a qualified professional mechanic.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your original part number is on this list or that your vehicle is listed below.
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 2007-2012
- AVALANCHE 1500 2010
- CAPRICE 2011-2013
- CAPTIVA SPORT 2012
- CTS 2008-2013
- DTS 2006-2011
- ENCLAVE 2008-2012
- EQUINOX 2007-2009
- ESCALADE / ESV / EXT 2010
- EXPRESS 1500/2500/3500 VANS 2008-2012
- G8 2008-2009
- HUMMER H2 2008-2009
- IMPALA 2006-2013
- LUCERNE 2006-2011
- MONTE CARLO 2006-2007
- OUTLOOK 2007-2010
- SAVANA 1500/2500/3500 VANS 2008-2012
- SRX 2007-2009
- STS 2010
- SUBURBAN 1500 2010
- TAHOE 2010
- TORRENT 2007-2009
- TRAVERSE 2009-2012
- VUE 2008-2010
- YUKON / YUKON XL 1500 2010
Frequently Asked Questions
Do I need to program this BCM?
No! That’s the best part. We program the module to your vehicle’s specific VIN before shipping it to you. Just be sure to provide your VIN after purchase.
What happens if I don’t perform the post-installation procedures?
You will likely have a persistent airbag warning light on your dash, and systems like traction control or brake lights may not function correctly. These steps are critical for safety and full functionality.
Where is the BCM located on my 2010 Savana 1500?
On most Savana and Express vans from this generation, the Body Control Module is located behind the center section of the dashboard, accessible after removing lower trim panels.
Will this fix my power window and door lock problems?
A failing BCM is a very common cause of erratic power window, lock, and interior lighting behavior. If you have already checked fuses and switches, the BCM is the most likely culprit.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot process and ship your order until we receive this information.
Is this compatible with my Chevy Express van?
Yes, the GMC Savana and Chevrolet Express are sister vehicles that share many components. This BCM fits a wide range of Express and Savana vans from 2008-2012. Please check the detailed fitment list to confirm.