Restore Your Van’s Electrical Systems with a Reliable, Programmed BCM
Are you battling frustrating electrical gremlins in your 2008-2012 Savana 3500 Van? Intermittent power windows, flickering lights, a security system that acts up, or even a sudden no-start condition can often be traced back to one component: a failing Body Control Module (BCM). As the central command center for your vehicle’s electronics, a faulty BCM can wreak havoc. Over my 20+ years in diagnostics, I’ve seen how a failing BCM can make a perfectly good work van feel unreliable. This isn’t just a replacement part; it’s a direct solution to restore order and predictability to your vehicle’s essential functions.
This module, part number 15948438, arrives at your door fully programmed with the latest GM software, specifically matched to your van’s Vehicle Identification Number (VIN). This critical step eliminates the need for an expensive trip to the dealership for programming, saving you both time and money. Simply provide your VIN at checkout, and we handle the complex part, so you can focus on the straightforward installation.
Case Study: A Tricky Diagnosis
I remember a 2011 Savana 3500 work van that came into my shop. The owner was at his wit’s end. The dome lights would stay on, the power locks worked only half the time, and twice that week, the van refused to start, showing only a flashing security light. The scan tool was throwing a U0140 (Lost Communication With Body Control Module) code along with a dozen other intermittent communication faults. Instead of chasing each symptom, we went straight to the source. After confirming power and ground at the BCM connector were good, we knew the module itself was the culprit. Installing a VIN-programmed 2008-2012 Savana BCM like this one solved every single issue in one go. The van was back on the road earning money the same afternoon.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM doesn’t always cause a complete shutdown. Often, the signs are strange and inconsistent. Here’s what to look for:
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light flashing on the dash, potentially causing a no-start condition.
- ✔ The horn sounding unexpectedly or not working when pressed.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
A Straightforward Guide to BCM Installation
Replacing the BCM in your Savana or Express van is a manageable job for a confident DIYer. The unit is typically located in the center dash area. Always consult a service manual for your specific vehicle, but here are the general steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait about 10-15 minutes to allow all systems to power down completely.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. It’s often mounted to a bracket behind the radio or climate controls.
- Disconnect and Remove: Unplug the 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 the 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.
- Reassemble and Reconnect: Reinstall the dash panels you removed. Reconnect the negative battery terminal.
- Perform Relearn Procedures: Start the vehicle. As noted below, you may need to perform a Brake Pedal Position Relearn or an Airbag System Sync if specific warning lights are present after installation.
Post-Installation Checks & Procedures
Because this 2008-2012 Savana BCM is pre-programmed, most functions should work immediately. However, some vehicle systems may require a ‘handshake’ with the new module. Don’t be alarmed if you see one of the following:
- Airbag System Sync: If the airbag 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, the brake lights or traction control may not function correctly until a brake pedal position sensor relearn is performed. This recalibrates the sensor to the new module.
Disclaimer: These procedures can vary. Always refer to a factory service manual for instructions specific to your vehicle’s year and model.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement for a wide range of General Motors vehicles and is compatible with numerous part numbers. Please verify your part number against this list or confirm 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:
- ✔ 2007-2012 Acadia
- ✔ 2010 Avalanche 1500
- ✔ 2011-2013 Caprice
- ✔ 2012 Captiva Sport
- ✔ 2008-2013 CTS
- ✔ 2006-2011 DTS
- ✔ 2008-2012 Enclave
- ✔ 2010 Escalade, ESV, EXT
- ✔ 2008-2012 Express 1500/2500/3500 Van
- ✔ 2008-2009 G8
- ✔ 2008-2009 Hummer H2
- ✔ 2006-2013 Impala
- ✔ 2006-2011 Lucerne
- ✔ 2006-2007 Monte Carlo
- ✔ 2007-2010 Outlook
- ✔ 2008-2012 Savana 1500/2500/3500 Van
- ✔ 2007-2009 SRX
- ✔ 2010 STS
- ✔ 2010 Suburban 1500
- ✔ 2010 Tahoe
- ✔ 2007-2009 Torrent
- ✔ 2009-2012 Traverse
- ✔ 2008-2010 Vue
- ✔ 2010 Yukon & Yukon XL 1500
What does VIN programming mean?
What does VIN programming mean?
It means we load the module with the specific software and settings for your vehicle’s exact configuration (engine, transmission, options) using your VIN. This ensures the BCM works correctly right out of the box, without needing a dealer to program it.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Is this a difficult part to install myself?
For someone with basic mechanical skills and tools, it’s a very manageable job. The main challenge is accessing the module, which usually involves removing some dash trim. Since we handle the programming, the technical complexity is greatly reduced.
What happens if my airbag light is on after I install it?
This is a known possibility. The new BCM needs to be electronically introduced to the airbag system (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be done by any professional shop with a compatible high-level scan tool.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information.