Are you experiencing frustrating and unpredictable electrical problems in your Chevrolet Impala or other GM vehicle? Issues like flickering lights, malfunctioning power windows and locks, or a security system that acts up on its own are common signs of a failing Body Control Module (BCM). The BCM is the central computer for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing symptoms. This replacement Body Control Module is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
This is not just a replacement part; it’s a complete, ready-to-install solution. We pre-program each module to your vehicle’s specific VIN, loading the latest GM software updates. This ensures seamless integration and proper function of all your vehicle’s features right out of the box. Simply provide your VIN after purchase, and we’ll handle the complex programming, saving you a trip to the dealership and expensive programming fees.
Common Symptoms of a Failing Impala Body Control Module
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Security system faults or the engine failing to start due to an anti-theft issue.
- ✔ Inoperative remote keyless entry (key fob).
- ✔ Dashboard warning lights appearing randomly.
- ✔ Communication errors with other vehicle modules (U-codes).
Installation and Additional Procedures
Physical installation is typically straightforward, as the BCM is located in an accessible spot, usually on the left side of the dash or steering column in the Impala. Once installed, our pre-programming ensures most functions work immediately. However, depending on your specific vehicle, a couple of minor relearn procedures may be necessary:
- Airbag System Sync: If the airbag warning light is illuminated 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. This is only required if the light is on.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct operation of the brake lights and traction control system.
This module is a direct fit for part number 15948439 and is also compatible with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM acts as the central hub for your car’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the climate control fans, ensuring everything works together as intended.
Is this BCM difficult to install?
The physical replacement is generally simple for someone with basic mechanical skills, often involving just a few bolts and electrical connectors. Since we pre-program the unit, you avoid the most difficult part of the job, which is the software setup.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as it’s essential for programming the module correctly.
What if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag module. A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.