Restore Your Vehicle’s Electrical Functions
Are you battling bizarre and frustrating electrical issues in your GM vehicle? A failing Body Control Module (BCM) is often the culprit. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and locks to the interior lights and security system. When it fails, it can cause a cascade of problems that are difficult to diagnose.
This replacement GM Body Control Module is the definitive solution to these issues. It’s not just a part; it’s a complete, ready-to-install service. We pre-program the module to your vehicle’s specific VIN, loading it with the latest software updates from GM. This ensures perfect compatibility and functionality right out of the box, saving you from a costly and time-consuming trip to the dealership for programming.
We had a 2009 Chevy Traverse come into the shop with the strangest set of symptoms. The owner said the dome lights would flicker randomly, the radio would shut off, and the power liftgate would refuse to open. He’d already replaced the battery and checked the fuses. After connecting our scan tool, we saw multiple communication errors pointing towards the BCM. Instead of a complex wiring repair, a new, pre-programmed BCM fixed every single issue. It highlights how a single module can be the source of widespread, seemingly unrelated electrical gremlins.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Flickering or inoperative interior and exterior lights.
- ✔ Erratic instrument cluster behavior or warning lights (like the security light).
- ✔ The vehicle’s security system preventing the car from starting.
- ✔ Radio or climate control systems not working correctly.
- ✔ Communication error codes stored when scanned with a diagnostic tool.
Why Choose Our Programmed GM Body Control Module?
Getting your vehicle back on the road shouldn’t be complicated. Our process is designed to be as simple as possible. By providing your VIN at checkout, you receive a GM Body Control Module that is a direct-fit replacement, flashed with the correct software for your specific options and configuration. This plug-and-play approach eliminates the need for expensive dealer-only tools and procedures. Plus, with no core charge, you can keep your old part without the hassle of returns.
Installation and Post-Install Notes
While installation is straightforward for many, some vehicles may require additional steps. If the airbag warning light appears after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems. Additionally, a Brake Pedal Position Relearn may be necessary on some models to ensure proper brake light and traction control operation. Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
This module is a direct replacement for a wide range of part numbers, including: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15880684, 15921352, 20815898, 22860591, 25892622, and many more. Please check the fitment list to confirm compatibility.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it to you. It arrives ready for installation, saving you a trip to the dealership.
How do I provide my vehicle’s VIN?
You can enter your VIN during the checkout process or send it to us via email after placing your order. We cannot ship the part until we have your VIN to ensure correct programming.
What if my airbag light is on after I install the new BCM?
This can happen on some models. It means the new BCM needs to be synced with the airbag system. A qualified technician with a professional diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Is this a simple plug-and-play installation?
For most vehicles, yes. You disconnect the battery, remove the old BCM, install the new one, and reconnect the battery. However, as noted, some models may require simple relearn procedures for the brake or airbag systems.
My original part number is not 15872421. Will this still work?
Yes, this module replaces a long list of interchangeable GM part numbers. Please review the compatible part numbers list on this page to ensure your original part number is included.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old BCM back to us.