Restore Full Electronic Function to Your GM Vehicle
Are you dealing with baffling electrical issues in your Chevrolet, GMC, Cadillac, or Buick? A failing Body Control Module (BCM) is often the culprit behind problems that seem to have no rhyme or reason. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and locks to the security system and interior lighting. When it fails, it can make your vehicle feel unpredictable and unreliable. This replacement module is the definitive solution to restore order and functionality.
From the Diagnostic Bay
We had a 2011 GMC Acadia come into the shop with a list of strange symptoms. The owner complained that the radio would randomly turn off, the liftgate wouldn’t open with the remote, and the anti-theft light would flash, sometimes preventing the car from starting. After confirming the battery and grounds were solid, our scan tool revealed multiple ‘Lost Communication with BCM’ codes. Instead of a complicated and expensive trip to the dealer, we installed a VIN-programmed BCM like this one. It was a direct fit, and once installed, all the phantom electrical gremlins vanished. The customer was back on the road the same day with their vehicle behaving like new.
Is Your BCM Failing? Common Symptoms
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ The vehicle’s security system engaging randomly or causing a no-start condition.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Windshield wipers behaving erratically or not parking in the correct position.
- ✔ Multiple, unrelated warning lights on the dashboard.
- ✔ Climate control functions not responding correctly.
The Plug-and-Play Solution: A VIN-Programmed GM Body Control Module
Don’t let a faulty BCM keep you off the road. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We eliminate the most significant hurdle in this repair: the need for expensive dealership programming. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our experts will program the module with the latest GM software specific to your vehicle’s build. This ensures that the module communicates perfectly with your car’s other systems right out of the box. This Programmed GM Body Control Module is a direct replacement for a wide range of part numbers, including 15276271, 22860591, 20815898, and many more, covering dozens of popular models like the Impala, Tahoe, Yukon, Express, Savana, and Acadia.
Installation and Post-Install Notes
Physical installation is straightforward, typically involving removing a few dash panels to access the old module. Once this new, pre-programmed module is connected, most functions will be immediately restored. However, depending on your specific vehicle, a couple of simple relearn procedures may be necessary:
- Airbag System Sync: If your airbag light is on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and stability control operation.
There is no core charge for this part. You can keep your old module.
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that controls and monitors most of your vehicle’s non-engine-related electronic features, such as lighting, power windows, security, door locks, and wipers.
Why is VIN programming so important?
Programming the module with your VIN ensures it has the correct software and settings for your vehicle’s specific options and features. An unprogrammed module will not function correctly. We do this for you before shipping.
How do I provide my VIN?
After you complete your purchase, we will contact you to request your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot ship the part until it is programmed.
Is this part difficult to install?
The physical replacement is typically straightforward for someone with basic mechanical skills, as it’s a plug-in module. The main benefit here is that the complex programming is already done, saving you a trip to the dealer.
Will this fit my vehicle?
This module fits a very wide range of GM vehicles and replaces dozens of original part numbers. Please check the detailed fitment list on this page to confirm compatibility with your make, model, and year.
Do I need to return my old BCM?
No. There is no core charge or need to return your original part.