Is Your GM Vehicle Experiencing Strange Electrical Problems?
If your Chevrolet, GMC, Cadillac, or Buick is suffering from erratic behavior like flickering lights, malfunctioning power windows or locks, or a security system that has a mind of its own, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central hub for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of frustrating and difficult-to-diagnose issues. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
This replacement Body Control Module, part number 15093910, is the definitive solution to restore your vehicle’s electronic stability. We take the hassle and high cost out of the repair process. Unlike a generic part off the shelf, we program this module specifically to your vehicle’s 17-digit VIN before it ships. This ensures that the BCM works seamlessly with the exact options and features your vehicle was built with, from power seats to the specific lighting package.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ Vehicle’s security system or alarm activating randomly.
- ✔ Instrument cluster warning lights (like Airbag or ABS) illuminating without a clear cause.
- ✔ Key fob not responding or working inconsistently.
- ✔ Communication errors when scanning the vehicle with a diagnostic tool.
- ✔ Intermittent no-start condition related to the anti-theft system.
Why Choose Our Programmed GM Body Control Module?
Choosing the right GM Body Control Module is critical for a lasting repair. Our process is designed for both professional technicians and savvy DIYers. By providing your VIN during checkout, you receive a module that is loaded with the latest software updates from GM, often correcting factory flaws that your original module may have had. This direct-fit, pre-programmed solution eliminates the need for expensive dealership programming or specialized tools for the initial setup, getting you back on the road faster.
Installation and Post-Install Notes
Installation is straightforward, typically involving locating the old module (often under the dash on the driver’s side or in the center console), disconnecting the battery, swapping the modules, and reconnecting everything. While our programming handles the heavy lifting, some vehicles may require a simple relearn procedure after installation. For example, if the airbag light is on, a professional scan tool may be needed to perform the “Setup SDM Primary Key in BCM” procedure. Similarly, a Brake Pedal Position relearn might be necessary on certain models to ensure proper brake light and stability control function. Always consult a service manual for your specific vehicle’s procedures.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls and monitors many of your vehicle’s non-engine related functions. This includes power windows, locks, interior and exterior lighting, the security system, wipers, and other comfort and convenience features.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and configuration for your vehicle’s specific features and options. This makes the installation process much simpler and ensures everything works correctly without a trip to the dealership.
Is this part difficult to install?
For someone with moderate mechanical skill, the physical replacement is typically not difficult. It’s usually located under the dashboard and involves unplugging connectors and removing a few bolts. The main benefit of our service is that the complex programming is already done for you.
What if my airbag light is on after I install the BCM?
This can happen on some models. It means the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a compatible professional scan tool to sync the modules and turn off the light.
Does this BCM have a core charge?
No, there is no core charge for this module. You can keep your original part.
Will this BCM fit my vehicle?
This module replaces a wide range of GM part numbers and fits many vehicles like the Chevy Impala, GMC Acadia, Cadillac DTS, Chevy Express, and more. Please check the detailed fitment list on this page to confirm it matches your make, model, and year.