Restore Your Vehicle’s Electronic Functions
Is your Chevrolet Express or GMC Savana van plagued by bizarre electrical issues? Flickering lights, malfunctioning power windows, intermittent wipers, or a security system that acts on its own are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of frustrating and unpredictable problems. This replacement module is the definitive solution to restore order and reliability to your vehicle’s essential functions.
The Plug-and-Play Advantage: Pre-Programmed for Your Van
Replacing a BCM typically involves a costly trip to the dealership for programming. We eliminate that step entirely. When you purchase this module, we will flash it with the latest official GM software specifically matched to your vehicle’s VIN. This means the module arrives at your door ready for installation. Simply provide us with your VIN after purchase, and our technicians will handle the complex programming, saving you hundreds of dollars in dealer fees and diagnostic time. This is the most efficient way to get your Express 3500 Body Control Module working correctly again.
From the Diagnostic Bay
We had a 2011 Express 3500 work van come into the shop with the strangest symptoms. The driver said the dome lights would stay on randomly, the radio would shut off, and the power door locks would cycle while driving down the road. We checked all the usual suspects—fuses, relays, and wiring harnesses—but found nothing. After hooking up the scan tool, we saw a flood of communication errors all pointing back to one component: the BCM. It was intermittently losing its mind and sending garbage data across the network. We installed a VIN-programmed BCM, and instantly, all the gremlins vanished. The van was back to being a reliable workhorse, and the driver was thrilled to have his sanity back.
Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ Malfunctioning dashboard gauges or warning lights (like the security light).
- ✔ The horn honking unexpectedly or not working when needed.
- ✔ Problems with the climate control system.
- ✔ Intermittent no-start conditions related to the anti-theft system.
- ✔ Communication error codes stored when scanned with a diagnostic tool.
Installation and Post-Install Procedures
While the programming is done for you, installation may require some additional steps depending on your specific vehicle. On most Express and Savana vans, the BCM is located in the center dash area. After installing the new Express 3500 Body Control Module, you may need to perform one or more relearn procedures. These are simple steps that sync the new module with other systems in your vehicle.
- 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 ensures the BCM and the airbag system are communicating correctly. This is only required if the light is on.
- Brake Pedal Position Relearn: Some models may require a recalibration of the brake pedal position sensor to ensure proper operation of the brake lights and stability control systems.
We always recommend consulting a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment
This BCM is a direct replacement for a wide range of GM vehicles and is compatible with numerous part numbers, including 15828601, 25892622, 20815898, and many more. It is designed to meet or exceed original equipment specifications for a perfect fit and flawless operation in your vehicle. Restore your confidence on the road with a reliable, fully functional electrical system.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This makes the installation process much simpler and saves you a significant amount of money and time compared to buying a blank module and taking it to a dealership.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to load the correct software and vehicle-specific options onto the module.
Where is the BCM located on a 2008-2012 Express 3500?
On the Express and Savana vans from this era, the Body Control Module is typically located behind the center part of the dashboard, often near the radio or climate controls. Access may require removing some dash trim panels.
Can I install this part myself?
If you are comfortable with basic automotive repairs, such as removing dashboard components and disconnecting electrical connectors, you can likely perform the installation. However, be aware that post-installation procedures like an airbag system sync may require a professional-grade scan tool.
What happens if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be electronically introduced to the vehicle’s airbag module (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a compatible high-end scan tool to resolve this and turn off the light.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your original module without needing to send it back to us.