Restore Your Vehicle’s Electrical System
Are you battling bizarre electrical issues in your GM vehicle? Flickering dashboard lights, malfunctioning power windows and locks, or a security system that acts up randomly 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 cause a wide range of frustrating problems. This replacement Body Control Module, part number 15837419, is the definitive solution to restore full functionality and reliability to your car, truck, or van.
From the Diagnostic Bay
We had a 2011 Express work van come in that was a real head-scratcher for the owner. The battery would be dead every other morning, the interior lights would stay on, and the radio would sometimes refuse to turn off even with the key out. The owner had already replaced the battery and alternator. After a quick scan, we saw multiple communication errors pointing to the BCM. Instead of a costly and time-consuming repair at the dealership, we installed one of our VIN-programmed modules. The van was back on the road the same day, electrical gremlins gone for good. It’s a common story, and this part is the simple fix.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Erratic or non-functional dashboard gauges and warning lights (including security light).
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ Key fob not responding or vehicle security system faults.
- ✔ Unexplained battery drain leading to a no-start condition.
- ✔ Horn sounding unexpectedly or not working.
Plug-and-Play Solution for Your 2008-2012 Express Body Control Module
Don’t waste time and money at the dealership. We make the replacement process simple. When you purchase this BCM, you provide us with your vehicle’s VIN. Our technicians will then program the module with the latest GM software specific to your vehicle’s configuration. This ensures that when the part arrives, it’s ready for installation without the need for an expensive programming tool. This module is a direct replacement for a wide range of GM part numbers, including 15837419, 25892622, and 20815898, and fits dozens of models from Chevrolet, GMC, Cadillac, Buick, and more. Please verify your part number against the extensive list provided to ensure perfect compatibility.
Post-Installation Information
While this module is programmed for a straightforward installation, some vehicles may require minor post-install procedures to sync all systems perfectly. These are typically simple and can sometimes be required.
- Airbag System Sync: If your 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 brake light operation and to keep the traction control system happy.
Always consult a factory service manual or a qualified technician if you are unsure about any step of the installation or post-installation process.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors a wide variety of non-engine-related functions, such as power windows, locks, lights, security systems, and interior accessories. It’s the brain for your vehicle’s comfort and convenience features.
How does the VIN programming service work?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians use this VIN to load the exact software and settings your vehicle had from the factory, ensuring the BCM works correctly right out of the box.
Is this part difficult to install?
For most models, the BCM is located under the dashboard and is accessible with basic hand tools. The physical replacement is typically straightforward. Since our modules are pre-programmed, you avoid the complex step of software flashing, making it a much simpler job for a DIYer or any mechanic.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
What if my airbag light turns on after I install the new BCM?
This can happen on some vehicles. It means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool to resolve this.