Is your Chevrolet Impala or other GM vehicle suffering from strange and unpredictable electrical problems? A failing Body Control Module (BCM) is often the culprit. The BCM acts as the central command center for your car’s body electronics, controlling everything from power windows and locks to interior lighting and the security system. When it starts to fail, it can cause a cascade of frustrating issues that seem unrelated.
This is a direct replacement Body Control Module, part number 15872388, which also supersedes a wide range of other GM part numbers. The best part? We handle the programming for you. Simply provide your vehicle’s VIN during checkout, and we will flash the module with the latest GM software specific to your car. This ensures a true plug-and-play installation, saving you a costly trip to the dealership for programming.
We recently had a 2011 Chevy Impala in the shop with a list of bizarre symptoms. The radio would turn on by itself, the interior dome light wouldn’t shut off, draining the battery, and the key fob worked only intermittently. The owner had already replaced the battery, assuming that was the issue. A quick scan with a professional tool revealed multiple communication error codes (U-codes) all pointing back to the BCM. Replacing the faulty unit with a pre-programmed Impala Body Control Module like this one resolved every single electrical gremlin instantly.
Common Symptoms of a Failing Impala Body Control Module
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system acting up, or a “Service Theft System” message on the dash.
- ✔ Keyless entry remote (fob) not responding or working intermittently.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights appearing for no reason.
- ✔ Communication errors with other vehicle computers, often logged as U-codes.
Installation and Post-Install Procedures:
While this module is programmed for a plug-and-play installation, some vehicles may require additional relearn procedures after the BCM is installed. These are simple steps that can often be completed with a high-end diagnostic scan tool.
- Airbag System Sync: If your airbag warning light illuminates after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light operation and to keep the traction control system happy.
Don’t let a faulty BCM keep you off the road. Restore your vehicle’s functionality and peace of mind with this professionally programmed module. Order today and take the first step toward a reliable repair.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions. This includes power windows, power locks, the security system, interior and exterior lighting, wipers, and the horn, among other things.
Do I need to program this BCM?
No. We program the module to your vehicle’s specific VIN before we ship it to you. This makes the installation process as simple as possible, eliminating the need for expensive dealership programming.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part without it.
What if the airbag light comes on after I install it?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A qualified technician with a professional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this part compatible with other vehicles besides the Impala?
Yes. This BCM fits a very wide range of GM vehicles, including the Acadia, Enclave, Traverse, Tahoe, Yukon, Escalade, Express/Savana vans, and more. Please check the detailed fitment list on this page to confirm compatibility with your specific model and year.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.