Restore Your Van’s Electrical System with a Reliable, Programmed BCM
If your 2008-2012 Savana 2500 Van is acting possessed—with flickering dash lights, power windows and locks with a mind of their own, or a security light that prevents it from starting—you’re likely dealing with a failed Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these symptoms countless times. The BCM is the central hub for your vehicle’s body electronics, and when it fails, it creates a cascade of frustrating and confusing problems. Don’t let a faulty module keep your work van off the road. This is the direct, no-hassle solution you’ve been looking for.
We take the guesswork and high costs out of the repair. Simply provide your vehicle’s VIN during checkout, and our experts will program this BCM with the latest GM software specifically for your Savana. It arrives at your doorstep ready for installation, bypassing the need for an expensive trip to the dealership for programming. This is the most efficient way to get your vehicle’s essential functions—from interior lighting to the anti-theft system—working correctly again.
A Technician’s Notebook: The Intermittent Gremlin
I once had a 2011 Savana work van in my bay that was driving the owner crazy. The complaint was intermittent no-starts and the radio randomly turning off. All the basic checks on the battery and alternator were fine. After connecting my scan tool, I noticed multiple U-codes (communication errors) pointing to the BCM. On these vans, the BCM is tucked in the center dash, and I’ve seen water intrusion from leaky windshield seals cause corrosion on the connectors. We swapped in a pre-programmed BCM like this one, and the van was back in service the same afternoon. It’s a textbook failure for these workhorses.
Common Signs of a Failing BCM
A bad BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your likely solution:
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ The security or anti-theft light is illuminated, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ False warnings on the instrument cluster (e.g., ‘Service Airbag’ or ‘Service StabiliTrak’).
- ✔ Communication error codes, such as U0140, U0155, or other U-series DTCs.
- ✔ Wipers activating on their own or not responding to the switch.
Your Straightforward BCM Installation Guide
Installing your new 2008-2012 Savana 2500 BCM is a manageable task for a confident DIYer. While the exact location can vary slightly, it’s typically found in the center dash area on these vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: On the Savana/Express vans, you’ll typically need to remove trim panels around the center dash or glove box area to access the module.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must 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 and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Relearns (If Needed): Start the vehicle. In some cases, you may need to perform a Brake Pedal Position relearn or an Airbag System sync if warning lights appear. See our FAQ for more details.
Verified Vehicle Compatibility List
This module is a direct replacement for part number 20839063 and is also compatible with a wide range of other GM part numbers and vehicles when programmed for your specific VIN. Please confirm your vehicle is on this list. This unit replaces: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084.
It fits a broad array of GM models including, but not limited to:
- ✔ 2008-2012 GMC Savana & Chevrolet Express Vans (1500, 2500, 3500)
- ✔ 2007-2012 GMC Acadia
- ✔ 2006-2013 Chevrolet Impala
- ✔ 2010 Chevrolet Tahoe, GMC Yukon, Cadillac Escalade
- ✔ 2009-2012 Chevrolet Traverse
- ✔ And many more models from Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, and Saturn.
Frequently Asked Questions
Do I need to do any programming after I receive this BCM?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation. However, some vehicles may require minor post-install relearn procedures for systems like the brake pedal sensor or airbag module, which can sometimes be done without special tools.
What is a core charge? Do I need to send my old part back?
There is absolutely no core charge for this part. You can keep your old module, saving you the time and expense of a return shipment.
What happens if my airbag light comes on after installation?
This is uncommon, but if it occurs, it means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM,’ requires a professional-grade scan tool to complete.
Is this the right fix for my 2008-2012 Savana 2500 BCM issues?
If you are experiencing multiple, unrelated electrical problems as described in our symptoms list, a faulty BCM is the most common cause. This module is the correct, reliable solution for these models.
Where do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit VIN. We cannot program and ship your module without it.