Restore Full Functionality to Your GM Van or SUV
If your 2008-2012 Express 3500 Van is starting to show bizarre electrical symptoms—like power windows with a mind of their own, flickering interior lights, or a security system that won’t cooperate—a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This replacement BCM, part number 25826125, is the reliable, straightforward solution to get your workhorse van back in top operating condition.
We take the guesswork and high costs out of the repair. Instead of towing your vehicle to a dealership for expensive diagnostics and programming, our professional cloning service makes this a simple plug-and-play fix. Just send us your original BCM, and we’ll transfer all the critical vehicle-specific data to this replacement unit, including the latest GM software updates. This ensures seamless integration with your van’s existing systems, including the VIN, mileage, and security information.
A Technician’s Notebook
I remember a call from a local contractor whose 2011 Express 3500 was becoming a nightmare. The dome lights would stay on, draining the battery overnight, and the power locks worked intermittently. He’d already replaced the battery twice. After a quick check for obvious shorts, we pulled the BCM. On the bench, we found evidence of internal corrosion on the circuit board—a common failure point in these work vans due to moisture exposure over time. A cloned BCM had him back on the road the next day, with no more dead batteries or electrical gremlins. It’s a fix that saves not just money, but critical downtime for business owners.
Is Your Vehicle Showing These Common BCM Failure Signs?
- ✔️ Intermittent or non-working power windows, door locks, or mirrors.
- ✔️ Interior or exterior lights that flicker, stay on, or don’t turn on at all.
- ✔️ The security system or keyless entry failing to operate correctly.
- ✔️ A parasitic battery drain that kills your battery overnight.
- ✔️ Instrument cluster warning lights (like the airbag or ABS light) appearing without a clear cause.
- ✔️ Communication error codes, such as U0140, U0155, or other U-series codes, when scanned.
- ✔️ The engine cranks but refuses to start due to security system lock-out.
A Straightforward Guide to BCM Installation
- âś” Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- âś” Locate the BCM: On most Express and Savana vans, the BCM is located in the center dash area, often accessible by removing the lower dash panels or glove box.
- âś” 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.
- âś” Install the New Module: Mount the replacement BCM in the same location and securely reconnect all the electrical harnesses. You should hear a click as they lock into place.
- âś” Reconnect Power: Reattach the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all body functions—windows, locks, lights, wipers, and radio—to confirm the repair was successful.
Important Post-Installation Steps
Our cloning service handles the heavy lifting, but some GM vehicles require a final handshake between modules after installation. Be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after the swap, 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 may be required to ensure proper brake light operation and to satisfy the traction control system.
Disclaimer: Specific requirements can vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Will This Fit My Vehicle?
This Body Control Module is a direct-fit replacement for a wide range of GM vehicles and is compatible with numerous part numbers. While this is a perfect solution for the 2008-2012 Express 3500 BCM, it also fits many others. Please verify your part number against the list below or contact us for confirmation.
Primary Fitment:
- Chevrolet Express 1500/2500/3500 Vans (2008-2012)
- GMC Savana 1500/2500/3500 Vans (2008-2012)
Also fits models such as: Acadia, Avalanche, Caprice, Captiva Sport, CTS, DTS, Enclave, Equinox, G8, H2, Impala, Lucerne, Monte Carlo, Outlook, SRX, STS, Suburban, Tahoe, Torrent, Traverse, Vue, Yukon & more. Please check the extensive part number list to confirm compatibility.
Compatible 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
Frequently Asked Questions
How does the cloning service work?
After you complete your purchase, you will receive instructions on how to ship your original BCM to us. Our technicians will then extract the unique data from your module and flash it onto the replacement unit. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to go to the dealer after installation?
No! Our cloning service is designed to eliminate the need for dealer programming. The replacement BCM will be plug-and-play, already configured for your vehicle’s specific options and security system.
Do you keep my old BCM?
No, we do not require a core. Your original module is always returned to you along with the programmed replacement unit. This is helpful if you ever want to revert or keep it for your records.
What if I don’t see my exact part number listed?
The provided list covers the most common interchangeable part numbers. If you are unsure, please contact us with your vehicle’s VIN and the part number from your original BCM. We are happy to verify compatibility for you.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, this is a very manageable job. The main challenge is typically accessing the module’s location within the dash. Following our installation guide and disconnecting the battery are the keys to a safe and successful replacement.