Is your GM vehicle acting possessed?
If you’re dealing with flickering lights, power windows and locks that have a mind of their own, or a security system that won’t cooperate, you’re likely facing a failing Body Control Module (BCM). The BCM is the central computer for your vehicle’s body electronics, and when it malfunctions, it can cause a cascade of frustrating and seemingly unrelated electrical problems. Don’t let these issues sideline your vehicle. We offer a reliable, pre-programmed solution to get you back on the road with confidence.
From the Diagnostic Bay
We once had a 2010 Chevy Express van in the shop with a classic mystery problem: a dead battery every morning. The owner had already replaced the battery and alternator. After checking for parasitic draws, we found a significant one. By pulling fuses one by one, we traced it to the BCM circuit. The faulty BCM wasn’t letting the interior lighting circuit go to ‘sleep’ after the van was turned off, slowly draining the battery overnight. A new, programmed BCM fixed the issue completely, saving the owner from further headaches and costly incorrect repairs.
Common Symptoms of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The anti-theft or security system preventing the car from starting.
- ✔ Intermittent or constant warning lights on the dashboard.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Communication errors when using a diagnostic scan tool.
- ✔ Wipers or radio malfunctioning without reason.
Why Choose Our Pre-Programmed GM Body Control Module?
Replacing a BCM typically requires an expensive trip to the dealership for programming. Our service eliminates that step. We take your vehicle’s VIN and program this module with the latest software updates from GM before it ever leaves our facility. This ensures it is ready for installation right out of the box, creating a seamless repair process. This module is a direct replacement for a wide range of original part numbers, including 15880684, 25892622, and 20815898, restoring your vehicle’s factory functions without the dealership hassle.
Important Post-Installation Steps
While this module is programmed for your vehicle, some systems may require a ‘handshake’ procedure after installation. Depending on your specific model, you may need a professional scan tool to perform an Airbag System Sync (if the airbag light appears) or a Brake Pedal Position Relearn. These are standard procedures for ensuring all vehicle systems communicate correctly after a major module replacement. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, wipers, security system, and interior accessories.
Is this BCM difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the old module with the new one. However, some vehicles may require post-installation procedures like an airbag sync or brake pedal relearn, which may require a professional scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will use this to program the module specifically for your vehicle’s configuration before we ship it.
What happens if my airbag light is on after installation?
If the airbag light is on, it means the new BCM needs to be synchronized with the airbag system’s computer (SDM). A technician with a professional diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.