Tired of Unpredictable Electrical Problems in Your Work Van?
If your 2008-2012 Express 3500 Van is suffering from flickering lights, malfunctioning power windows or locks, or a security system that has a mind of its own, the culprit is often a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. This isn’t just an annoyance; for a work vehicle, it’s a reliability problem that costs you time and money. This part provides a direct, dependable solution.
Case Study: The Ghost in the Work Van
I remember a 2011 Express 3500 that came into my shop from a local plumbing company. The driver complained of the dome lights staying on, the radio randomly shutting off, and an intermittent no-start condition that was making him late for jobs. A diagnostic scan showed a slew of communication errors, all pointing to the BCM. These modules, especially in hard-working vans, are prone to failure from heat cycles and constant use. We replaced it with a VIN-programmed unit just like this one. The result? All the electrical gremlins vanished, and the van was back in service the same day, saving the owner from a costly dealership visit and further downtime.
Is Your Van Exhibiting These Electrical Gremlins?
A failing Express 3500 Body Control Module can manifest in many ways. Here are the most common signs I’ve seen in my 20+ years of diagnostic experience:
- â Erratic interior or exterior lights (flickering, staying on, or not working at all).
- â Power windows, mirrors, or door locks operating intermittently or not at all.
- â The security system or keyless entry failing to work correctly.
- â Instrument cluster warning lights (like the airbag or brake light) illuminating without a clear cause.
- â Communication failure diagnostic trouble codes (DTCs), such as U0140, U0155, or other U-codes.
- â Intermittent no-start conditions where the engine cranks but won’t fire up due to a security system fault.
The Simple, No-Hassle Solution
Forget about expensive diagnostic fees and programming charges at the dealership. We make this repair straightforward. When you purchase this BCM, you provide us with your vehicle’s VIN. We then perform a cloning service, programming the module with the latest GM-approved software specific to your Express 3500. It arrives at your door ready to be installed, making this a true plug-and-play fix. We even return your original module to you afterward.
A Straightforward Guide to BCM Installation
For the confident DIYer or professional technician, swapping the Express 3500 Body Control Module is a manageable job. In most of these vans, the BCM is located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. On the Express/Savana vans, it’s typically located behind the lower center dash trim.
- Disconnect and Remove: 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 the new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Final Steps: Reassemble your dash panels and reconnect the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all body functionsâlights, locks, windows, radio, etc. Note the important post-installation procedures below.
Important Post-Installation Procedures
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ to recognize the new BCM. This is normal.
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible professional scan tool. This syncs the airbag system to the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure the brake lights and traction control system function as designed.
Disclaimer: Vehicle systems vary. Always have a factory service manual available for your specific model or consult with a qualified technician if you are unsure about any step.
Verified Compatibility for Your Vehicle
This BCM, part number 15948439, is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list and that the part number on your original module is listed below.
Interchangeable 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
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
IMPALA 06-12 Body Control (BCM); (LH dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
YUKON 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 2500 VAN 11-12 Body Control (BCM); (center dash)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 22860591
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 11-12 Body Control (BCM)
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
STS 10 Body Control (BCM); center dash
SAVANA 3500 VAN 08-09 Body Control (BCM); (center dash)
TORRENT 07-09 Body Control (BCM); (center dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898
CTS 08-13 Body Control (BCM); LH dash
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921436
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 6.0L
G8 08-09 Body Control (BCM); (center dash)
IMPALA 13 Body Control (BCM); (LH dash), ID 22820315
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898
ESCALADE 10 Body Control (BCM); (under steering column), ID 25892622
LUCERNE 06-11 Body Control (BCM); (right side dash)
CTS 08 Body Control (BCM); RH dash
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 4.8L
SAVANA 2500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 4.8L
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.0L
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25892622
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898
SRX 07-09 Body Control (BCM); LH dash
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898
EXPRESS 3500 VAN 11-12 Body Control (BCM)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
SAVANA 3500 VAN 11-12 Body Control (BCM)
VUE 08-10 Body Control (BCM); (center dash)
CAPRICE 11-13 Body Control (BCM)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EXPRESS 2500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
Frequently Asked Questions
Frequently Asked Questions
What exactly is a BCM cloning service?
Our cloning service means we transfer the specific software and vehicle data from your original BCM to this replacement unit. This ensures it works seamlessly with your van’s existing systems, just like the original did, without requiring a trip to the dealer for programming.
Do I need to send my original BCM to you?
Yes. For our cloning service, we need your original module to extract the data. We will return your original module along with your newly programmed replacement. Just provide your VIN at checkout, and we’ll coordinate the process.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. If your check engine light is on, you likely have a separate issue with the engine or powertrain control module (PCM/ECM). A BCM replacement usually resolves communication codes (U-codes) and body-related faults.
What tools do I need for installation?
For most installations, you’ll only need basic hand tools like a socket set and some panel removal tools to access the BCM in the dash without causing damage. No special electronic equipment is needed for the physical installation.
What if my airbag light is on after I install it?
This is a common security measure. The airbag system (SDM) needs to be electronically introduced to the new BCM. A professional technician with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to clear the light.