Restore Control Over Your Van’s Electronics
Is your Chevrolet Express or GMC Savana van acting possessed? Flickering lights, power windows with a mind of their own, or a security system that randomly prevents you from starting the engine are all classic signs of a failing Body Control Module (BCM). As the central computer for your vehicle’s comfort and convenience features, a faulty BCM can turn a reliable workhorse into a source of daily frustration. I’ve seen it countless times in the shop: a perfectly good engine that won’t start or a dashboard lit up with warnings, all tracing back to this single component. This isn’t just an annoyance; it’s a reliability issue that can cost you time and money.
This replacement Body Control Module is the definitive solution. We take the guesswork and high costs out of the repair by programming the module to your van’s exact Vehicle Identification Number (VIN) before it ships. This means it arrives ready for installation, loaded with the latest GM software updates for improved performance and reliability. You get a part that communicates seamlessly with your vehicle’s other systems, restoring function and peace of mind without the expensive trip to the dealership for programming.
A Technician’s Notebook
I remember a 2011 Express 3500 work van that came into my bay with a bizarre set of symptoms. The driver reported the dome lights wouldn’t turn off, the power locks worked intermittently, and occasionally, the van wouldn’t crank at all. A scan tool showed a flurry of communication errors, including a U0140 (Lost Communication with BCM). After verifying the power and grounds to the BCM were solid, the diagnosis was clear. The original module’s internal circuits were failing. We installed one of our VIN-programmed modules, and it was like flipping a switch. All the gremlins vanished. The van was back on the road earning money the same afternoon, a testament to how a reliable, pre-programmed Express 3500 Van BCM can be a lifesaver for business owners.
Common Signs of a Failing BCM
If you’re experiencing any of the following issues, a faulty BCM is the likely culprit. Replacing it can resolve these problems and restore proper functionality.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft system preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss with the BCM, such as U0140, B1001, or B1325.
- ✔ Airbag warning light illuminated on the dash (may require a post-install sync).
A Straightforward Guide to Installation
Installing your new Express 3500 Van BCM is a manageable job for a confident DIYer or any professional technician. While the exact location can vary slightly by model, it’s typically found in the center dash area on Express and Savana vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most Express/Savana vans, you will need to remove the lower dash panels below the radio/HVAC controls to access the module. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses 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: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the wiring harnesses. You should hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test your lights, locks, and windows to confirm functionality is restored.
- Perform Relearns (If Needed): Start the vehicle. If you see an airbag light or notice brake light issues, you may need to perform the post-installation procedures noted below with a capable scan tool.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and supersedes multiple part numbers. Please match your vehicle from the list below. After purchase, simply provide your VIN for programming.
Fits Models Including:
ACADIA 07-12
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE / ESV / EXT 10
EXPRESS 1500/2500/3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500/2500/3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON / YUKON XL 1500 10
*Note: Specific options or IDs may apply. Verify fitment details from the original data if unsure.
Frequently Asked Questions
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module, which can be helpful for double-checking part numbers.
Is this really plug-and-play?
Yes, because we program it to your VIN, it is designed to be a plug-and-play installation. In some cases, as with many electronic parts, additional vehicle-specific relearn procedures like for the airbag or brake pedal sensor may be required using a professional scan tool.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship the module without it.
What happens if my airbag light comes on after installation?
This is a known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A professional shop can perform the ‘Setup SDM Primary Key in BCM’ procedure with a diagnostic tool to resolve this.
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 an issue with a different component, such as the Engine Control Module (ECM) or a sensor. A BCM failure is more likely to cause security lights, communication codes, or body electrical problems.