Restore Your Van’s Electrical System with a Plug-and-Play Solution
If your 2008-2012 Express 3500 Van is plagued by baffling electrical issues—like power windows with a mind of their own, flickering interior lights, or a security light that prevents it from starting—a failing Body Control Module (BCM) is the likely culprit. As the central command for your vehicle’s body electronics, a faulty BCM can bring your workhorse to a standstill, costing you time and money. This isn’t just an inconvenience; it’s a hit to your bottom line. We offer a direct, reliable solution: a replacement BCM, part number 25826125, that arrives at your door fully programmed for your specific vehicle.
Forget about expensive dealership visits and towing fees. Simply provide us with your van’s VIN during checkout, and our technicians will flash the module with the latest GM software updates. This ensures seamless integration and restores all functions as the factory intended. This is the most efficient way to solve those frustrating electrical gremlins and get your Express van back in service.
A Technician’s Notebook: The Case of the Haunted Work Van
A local contractor brought in his 2011 Express 3500, completely fed up. The radio would turn on by itself, the door locks would cycle randomly while driving, and worst of all, it would intermittently refuse to crank. He’d already replaced the battery and checked the ignition switch. After connecting my scan tool, I saw a slew of U-codes (communication errors) pointing to the BCM. A visual inspection confirmed my suspicion: water had wicked down a poorly sealed wire harness behind the dash, dripping directly onto the BCM and causing corrosion on the circuit board. This is a common failure point I’ve seen on dozens of these vans. Replacing the BCM with a pre-programmed unit and fixing the leak had him back on the job site the next day, saving him from costly downtime.
Is Your Express Van Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution:
- âś” Intermittent or non-functional power windows, door locks, or mirrors.
- âś” The security or anti-theft light stays on, causing a no-start condition.
- âś” Interior dome lights or dashboard lights behave erratically or don’t work at all.
- âś” The horn sounds randomly or doesn’t work when pressed.
- âś” Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
- âś” Inconsistent operation of heating and A/C blower motor controls.
Your Straightforward BCM Installation Guide
Installing your new 2008-2012 Express 3500 BCM is a manageable job for a DIYer with basic tools or a quick task for any professional mechanic. Since we program it beforehand, you skip the most complicated step.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to discharge.
- Locate the BCM: On the Express and Savana vans, the BCM is typically located in the center dash area, often accessible by removing the lower dash panels.
- 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 the new, pre-programmed BCM in the same location and securely re-attach all electrical connectors. 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 all body functions: lights, locks, windows, radio, etc.
- Post-Install Procedures: In some cases, additional steps may be required. If the airbag light is on, a scan tool is needed to perform the ‘Setup SDM Primary Key’ procedure. A ‘Brake Pedal Position Relearn’ may also be necessary for proper brake light and traction control operation.
Verified Vehicle Compatibility List
This Body Control Module is a direct fit for a wide range of GM vehicles and is a replacement for numerous part numbers, including 15828601, 20864767, 25892622, and more. Please verify your vehicle is on the list below. If you have any questions, our team is here to help.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Just provide your vehicle’s VIN, and it will arrive ready for installation, saving you hundreds in dealership fees.
What happens after I place my order?
After you purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this to flash the module with the correct software for your specific vehicle configuration. We cannot ship the part until we receive your VIN.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
What if the airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
How do I know if this part number will fit my vehicle?
This module, 25826125, replaces a long list of original GM part numbers. Check the compatibility list on this page or match your original part number to the list provided. When in doubt, contact us with your VIN.