Tired of Electrical Gremlins in Your GM Vehicle?
As a technician with over two decades of experience, I’ve seen it all when it comes to baffling electrical issues. Flickering dashboard lights, power windows with a mind of their own, a horn that won’t stop blaring, or worse—a van that refuses to start. More often than not, the culprit is a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it goes, chaos ensues. This isn’t just an annoyance; it can be a major disruption for your work or family life.
We offer a dependable and straightforward solution: a replacement Body Control Module, part number 25826124, that arrives at your door fully programmed to your vehicle’s specific VIN. We handle the complex part, loading the latest GM software updates before we ship. This means you can bypass the expensive trip to the dealership and the hassle of needing specialized programming tools. This is the direct-fit, reliable fix you’ve been looking for to restore order to your vehicle’s electrical system.
A Technician’s Notebook: The Case of the Erratic Express Van
Just last month, a contractor brought in his 2011 Express 2500 work van. The complaint was a laundry list of problems: the radio would cut out, the interior dome lights would flicker randomly, and occasionally the van wouldn’t crank. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I saw multiple communication loss codes with various modules. This pattern immediately pointed me to the BCM. Instead of a costly dealer part, we installed one of our VIN-programmed units. The swap took less than an hour, and instantly, all the electrical gremlins were gone. He was back on the job the same afternoon, saving significant time and money.
Is Your Vehicle Showing These Symptoms?
- ✔️ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔️ Erratic or dead instrument cluster gauges.
- ✔️ Interior or exterior lights flickering or not working at all.
- ✔️ The security system preventing the vehicle from starting (anti-theft light flashing).
- ✔️ Unexplained battery drain that leaves you stranded.
- ✔️ Diagnostic trouble codes (DTCs) related to communication errors (U-codes).
Your Straightforward BCM Installation Guide
Installing your new 2008-2012 Express 2500 BCM is a manageable task for a confident DIYer. While the exact location varies by model (see fitment list), the general process is similar. Always consult a repair manual for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On most Express and Savana vans, the BCM is located in the center dash area. On other models like the Impala or Acadia, it’s often on the left side of the dash or under the steering column.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Use a trim removal tool to avoid scratching surfaces.
- 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 BCM: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors. Ensure they click securely into place.
- Post-Installation Procedures: Reconnect the battery. You will likely need to perform a couple of crucial relearn procedures as detailed below.
Important: Post-Installation Relearn Procedures
After installing your new BCM, a few final steps are required to ensure full functionality and safety. These procedures sync the new module with your vehicle’s other systems.
- Airbag System Reset: To clear the airbag warning light, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This is a critical safety step.
- Brake Pedal Position Sensor Relearn: Some vehicles require the brake pedal position sensor to be recalibrated. This ensures the brake lights and stability control systems function correctly.
Note: If you are not comfortable performing these steps, we recommend seeking assistance from a qualified professional mechanic.
Verified Fitment Across GM Models
This Body Control Module is a direct replacement for part number 25826124 and many other interchangeable part numbers. It is compatible with a wide range of General Motors vehicles. Please verify your part number or consult the list below. This module is a confirmed fit for the 2008-2012 Express 2500 BCM and many others.
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 10, ESCALADE ESV 10, ESCALADE EXT 10, EXPRESS 1500/2500/3500 VANS 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 VANS 08-12, SRX 07-09, STS 10, SUBURBAN 1500 10, TAHOE 10, TORRENT 07-09, TRAVERSE 09-12, VUE 08-10, YUKON 10, YUKON XL 1500 10 (Please check specific options and IDs in the original listing data for precise fitment).
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to the VIN you provide during checkout. It will arrive ready for installation, though some vehicle-specific relearn procedures (like for the airbag or brake pedal sensor) may be required after you install it.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to ensure correct programming.
Is this a brand new part?
This is a high-quality, tested, and guaranteed functional replacement part that has been professionally prepared and programmed with the latest software for your vehicle.
Will this fix my ‘Service Airbag’ light?
If the light is caused by a faulty BCM, this part will resolve the root cause. However, after installation, you MUST perform the ‘Setup SDM Primary Key in BCM’ procedure with a proper scan tool to clear the light and ensure the system is active.
What tools do I need for the installation?
For the physical installation, you’ll typically need basic hand tools like a socket set and a trim removal tool. For the post-installation procedures, a high-level bidirectional scan tool is required for the airbag and brake sensor relearns.