Restore Your Van’s Electrical Systems with a VIN-Programmed BCM
If you’re dealing with flickering lights, malfunctioning power accessories, or a security system that has a mind of its own, you’re not just inconvenienced—your workhorse 2008-2012 Express 3500 Van is becoming unreliable. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can create some of the most frustrating and hard-to-diagnose electrical gremlins. The BCM is the central command for your van’s body electronics, and when it starts to fail, it can disrupt everything from your power windows to your instrument cluster.
This isn’t just another part. This is a complete solution. We take a high-quality replacement BCM and program it with the latest GM software, specifically matched to your van’s Vehicle Identification Number (VIN). This means you get a module that is truly plug-and-play, eliminating the need for expensive dealership programming or specialized scan tools for the initial setup. Get your van back to being the dependable partner you need it to be.
Common Symptoms of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ The anti-theft or security light is illuminated, potentially causing a no-start condition.
- ✔ Erratic or incorrect readings on the instrument panel gauges.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss with other modules, such as U0140, U0155, or U0164.
Case Study: The Ghost in the Work Van
I had a local contractor bring in his ’11 Express 3500 that was driving his crew crazy. The radio would shut off randomly, the dome light would flicker while driving, and twice the power locks had failed, locking their tools inside. They’d been to two other shops that couldn’t find the issue because it was so intermittent. After checking the main power and ground circuits, I focused on the BCM. A quick data scan showed erratic voltage outputs to the affected circuits. We swapped in a VIN-programmed BCM like this one, and the ‘ghost’ was gone. It’s a classic case where shotgunning parts costs time and money, but targeting the central controller provides a definitive fix.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the systems to fully discharge.
- ✔ Locate the BCM: On most Express and Savana vans, the BCM is located in the center dash area, often accessible by removing lower dash panels or the glove box. Consult a service manual for the exact position on your specific model.
- ✔ 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 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. Ensure they click into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Relearns (If Necessary): Start the vehicle. If you see an airbag warning light or notice brake light issues, you may need to perform the post-installation procedures detailed below. For many, the vehicle will function correctly immediately.
Important Post-Installation Information
While we program the module for a plug-and-play experience, certain vehicle security and safety systems may require a ‘handshake’ with the new BCM. This is normal. Key procedures that may be needed include:
- Airbag System Sync: If the airbag light is on 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 relearn might be necessary for proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always have a factory service manual or a qualified technician available for guidance if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15819552 and a wide range of other GM part numbers. It is guaranteed to fit the following vehicles (please verify your specific model and options):
EXPRESS 1500/2500/3500 VAN 08-12
SAVANA 1500/2500/3500 VAN 08-12
IMPALA 06-13
ACADIA 07-12
MONTE CARLO 06-07
TAHOE 10
TRAVERSE 09-12
YUKON / YUKON XL 1500 10
CAPTIVA SPORT 12
DTS 06-11
OUTLOOK 07-10
SUBURBAN 1500 10
ESCALADE / ESV / EXT 10
STS 10
TORRENT 07-09
CTS 08-13
G8 08-09
AVALANCHE 1500 10
LUCERNE 06-11
SRX 07-09
HUMMER H2 08-09
VUE 08-10
CAPRICE 11-13
ENCLAVE 08-12
This module replaces the following 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.
Do I need to program this BCM?
Do I need to program this BCM?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This makes the installation process as simple as swapping the part, saving you a trip to the dealer.
How do I give you my VIN?
After you complete your purchase, we will contact you to request your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to perform the programming.
Do I need to send my old BCM back?
No, this is not a repair service or a cloning service that requires your original part. We ship you a replacement module programmed to your VIN, and there is no core charge or need to return your old one.
Where is the BCM located on a 2010 Express Van?
On the 2008-2012 Express and Savana vans, the Body Control Module is typically located behind the center of the dashboard, often accessible after removing the lower trim panels or glove compartment.
Is it normal for the airbag light to be on after installation?
It can be. For safety, the new BCM needs to be electronically synchronized with the airbag’s computer (SDM). If the light is on, the ‘Setup SDM Primary Key in BCM’ procedure must be performed by a technician with a capable diagnostic tool.