Restore Your Van’s Electrical Systems with a Reliable, Programmed BCM
Is your 2008-2012 Express 3500 Van acting possessed? Flickering lights, unresponsive power windows, a security light that won’t turn off, or even a frustrating no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause chaos. This isn’t just an annoyance; for a work van, it’s downtime and lost money. Instead of paying for expensive diagnostics and programming fees at the dealership, get a dependable solution that arrives ready to install.
We take the guesswork and hassle out of the repair. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this BCM with the latest GM-certified software specific to your Express 3500. This ensures all factory options and systems communicate correctly right out of the box, restoring the functionality you depend on every day.
A Technician’s Notebook
I remember a call from a local contractor whose 2011 Express 3500 was a diagnostic nightmare. One day the dome lights wouldn’t turn off, draining the battery. The next, the power locks worked intermittently. He’d already replaced the battery and checked fuses. After connecting my scan tool, I saw multiple U-codes (communication errors) pointing to the BCM. Instead of a new, unprogrammed module from the dealer, we installed one of our VIN-programmed units. The install took less than an hour, and instantly, all the electrical gremlins were gone. It’s a common failure, and having a pre-programmed module saves hours of labor and vehicle downtime.
Is Your Van Showing These Symptoms?
- ✔️ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔️ The security or anti-theft light stays on, preventing the engine from starting.
- ✔️ Interior or exterior lights flickering, staying on, or not working.
- ✔️ The horn sounding randomly or not working when pressed.
- ✔️ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
- ✔️ Wipers behaving unpredictably or not parking in the correct position.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the Express/Savana vans, the Body Control Module is typically located in the center dash area. You may need to remove a few trim panels 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 old module and remove it.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Secure it and plug in all the electrical connectors firmly until they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test all body functions: lights, locks, windows, wipers, etc.
Important Post-Installation Steps
While this is a plug-and-play repair for most functions, some systems may require a relearn procedure. This is standard for many modern vehicles. Please note:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure proper brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge or deposit associated with this purchase.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15921353 and is compatible with a wide range of GM vehicles. It interchanges with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084. It fits models including:
- 2008-2012 EXPRESS 1500/2500/3500 VAN
- 2008-2012 SAVANA 1500/2500/3500 VAN
- 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
- 2008-2009 G8
- 2008-2009 HUMMER H2
- 2006-2013 IMPALA
- 2006-2011 LUCERNE
- 2006-2007 MONTE CARLO
- 2007-2010 OUTLOOK
- 2007-2009 SRX
- 2010 STS
- 2010 SUBURBAN 1500
- 2010 TAHOE
- 2007-2009 TORRENT
- 2009-2012 TRAVERSE
- 2008-2010 VUE
- 2010 YUKON / YUKON XL 1500
Disclaimer: Always verify your specific model and options. Specific relearn procedures can vary. We recommend consulting a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is the only way we can program the module with the correct software and settings for your specific vehicle’s features. This step is crucial for a successful installation.
Is this a difficult part to install for a DIYer?
For someone with basic mechanical skills, this is a very manageable job. The main challenge is typically accessing the module behind the dash panels. Since we handle the programming, the most complex part of the job is already done for you.
What happens if I don’t do the airbag or brake relearn procedures?
If the airbag light is on after install, the system will remain inactive until the SDM key sync is performed. If a brake pedal relearn is needed and not done, you may experience issues with brake light operation or traction control/stabilitrak warnings.
Will this fix my no-start problem?
A failing BCM is a very common cause of no-start issues related to the vehicle’s anti-theft or security system. If your security light is on and the vehicle won’t crank, this module is a very likely solution.
Do I have to send my old part back?
No. This BCM is sold without a core charge. You can keep or dispose of your original module as you see fit.