Is Your GM Vehicle Acting Possessed?
If you’re dealing with a frustrating array of electrical gremlins—from flickering lights and malfunctioning power windows to a security system that has a mind of its own—the culprit is often 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 confusing and intermittent problems that are difficult to diagnose. Don’t let a faulty module keep you off the road. This replacement GM Body Control Module is the reliable, plug-and-play solution you need.
From the Diagnostic Bay
We had a 2009 Chevy Impala come in with the strangest set of symptoms. The customer said the radio would randomly turn off, the driver’s side power window wouldn’t work, but only on Tuesdays (he swore!), and the anti-theft light would flash, preventing the car from starting. We checked grounds, wiring, and individual components with no luck. Finally, we hooked up our high-level scanner and saw a flood of communication errors pointing back to one source: the BCM. Swapping in a pre-programmed BCM like this one solved every single issue instantly. It’s a perfect example of how one failing module can create a cascade of seemingly unrelated problems.
Symptoms of a Failing GM Body Control Module
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system engaging randomly, causing no-start conditions.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating without a clear cause.
- ✔ Horn, wipers, or radio functioning incorrectly.
- ✔ Communication loss codes when scanned with a diagnostic tool.
The Plug-and-Play Solution
Getting your vehicle back to normal shouldn’t require an expensive trip to the dealership. We take the hassle out of the repair by pre-programming this BCM to your vehicle’s specific Vehicle Identification Number (VIN) before we ship it. This ensures that it integrates seamlessly with your vehicle’s existing systems right out of the box. Simply provide your VIN at checkout, and we’ll handle the rest. This module is a direct replacement for a wide range of original part numbers, including 15093910, 25892622, 20815898, and many more, covering vehicles like the Chevy Impala, GMC Acadia, Cadillac DTS, and Chevy Express vans.
Post-Installation Information
While this module is designed for a straightforward installation, some vehicles may require additional steps to ensure all systems are synchronized. These are not signs of a faulty part but are standard procedures for certain GM platforms.
- Airbag System Sync: If your airbag warning light is on 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 some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light and traction control operation.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and interior accessories.
Do I need to get this module programmed by a dealer?
No! This is the key benefit of our service. We program the module to your car’s VIN before shipping it to you. It arrives ready to be installed, saving you time and money.
Where is the BCM located on my vehicle?
Location varies by model. It’s commonly found under the driver’s side dashboard near the steering column, behind the glove box, or in the center dash console area. Please verify the location on your specific vehicle before ordering.
Is this part guaranteed to fix my electrical issues?
This module will resolve any issues directly caused by a faulty BCM. If you are experiencing symptoms like erratic lights, non-working power accessories, or random security system alerts, a failing BCM is the most likely cause.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.