Are you experiencing bizarre electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that won’t cooperate, or an engine that refuses to start can all point to a single culprit: a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This replacement BCM, part number 25847589, is the definitive solution to restore your vehicle’s electrical system to perfect working order.
From the Diagnostic Bay
We had a 2011 Express work van come in that was driving the owner crazy. The radio would turn on and off by itself, the dome lights would stay on, and sometimes the van just wouldn’t start, leaving the driver stranded. He had already replaced the battery and checked the alternator. After hooking up our diagnostic tool, we saw multiple communication errors all pointing to the BCM. We installed a VIN-programmed module just like this one, and it was like the van was new again. All the strange electrical gremlins vanished instantly. It’s a common failure, but thankfully, it’s a straightforward fix with the right part.
Solving Your Electrical Headaches
A faulty BCM can make your vehicle feel unreliable. Instead of spending a fortune on diagnostic fees at a dealership and paying for expensive programming, get this plug-and-play solution. We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM software specific to your vehicle. This ensures seamless integration and functionality right out of the box. This is the most efficient way to get your 2008-2012 Express 2500 BCM replaced and your van back to being a reliable workhorse.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic behavior from the radio or interior/exterior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Dashboard warning lights appearing for no reason.
- ✔ Problems with the heating and A/C controls.
- ✔ Rapid battery drain when the vehicle is off.
Installation and Post-Install Notes
Replacing the BCM is typically a straightforward process. It is often located under the dash on the driver’s side. Once the new module is installed, it will be ready to function. However, in some vehicles, additional steps may be required:
- Airbag System Sync: If the airbag warning light is illuminated after installation, 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 certain models, a brake pedal position sensor relearn may be necessary to ensure correct operation of the brake lights and traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
This module is a direct replacement for a wide range of part numbers, ensuring broad compatibility. If your original module has any of the following part numbers, this unit is the correct replacement: 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.
Order your pre-programmed 2008-2012 Express 2500 BCM today and put an end to those frustrating electrical problems for good.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls electronic accessories like power windows, locks, lights, the security system, and climate controls.
Do I need to get this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready for installation, saving you a trip to the dealership and additional programming fees.
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 your order until we receive your VIN to program the module.
Is this part difficult to install?
For most DIY mechanics with basic tools, the installation is straightforward. The BCM is usually located under the dashboard. However, if you are not comfortable working with vehicle electronics, we recommend professional installation.
What if my airbag light is on after installation?
This can happen on some models. It means the new BCM needs to be electronically synced with the airbag system using a professional scan tool. This procedure is called ‘Setup SDM Primary Key in BCM’.
My original part number is on your list, but it’s not 25847589. Will this work?
Yes. This BCM is a compatible replacement for all the part numbers listed in the description. We will program it to function correctly for your specific vehicle based on the VIN you provide.