Is Your Chevrolet Impala Experiencing Strange Electrical Problems?
If your 2006-2013 Impala is suffering from baffling electrical issues like flickering lights, malfunctioning power windows or locks, or a persistent security warning on the dash, a failing Body Control Module (BCM) is the likely culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and seemingly unrelated symptoms. This replacement Impala Body Control Module is the reliable, cost-effective solution to restore full functionality to your vehicle.
From the Diagnostic Bay
We had a 2011 Impala come in that was driving the owner crazy. The radio would turn off randomly, the driver’s side window wouldn’t go down, and the anti-theft light would flash, sometimes preventing the car from starting. The owner had replaced the battery and checked fuses with no luck. After connecting our diagnostic tool, we saw multiple communication errors pointing back to one source. We installed a VIN-programmed BCM, and instantly, all the electrical gremlins vanished. It’s a perfect example of how a single faulty module can create a cascade of confusing problems.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on, flickering, or not working at all.
- ✔ The security or anti-theft system light is illuminated, potentially causing a no-start condition.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers operating intermittently or at the wrong speed.
- ✔ False warnings on the instrument cluster (e.g., “Service Airbag,” “Service Traction Control”).
- ✔ Communication errors when scanned with a diagnostic tool.
A Simple, Programmed Solution
Don’t waste time and money at the dealership. This Body Control Module arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This eliminates the need for expensive dealer-only programming tools, making the repair process faster and more affordable. Simply provide us with your vehicle’s VIN upon purchase, and our experts will handle the programming before shipping. This ensures a seamless installation and proper communication with your car’s other electronic systems.
Post-Installation Procedures
While this module is programmed for your vehicle, some systems may require a simple relearn procedure after installation to sync correctly. This is a normal part of the repair process.
- Airbag System Sync: If the airbag warning light is on 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.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration may be necessary.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Guaranteed Fitment
This BCM is a direct replacement for part number 20935349 and is interchangeable with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084. It fits a wide variety of GM vehicles, including the Impala, Equinox, Acadia, various Express/Savana vans, and more. Please verify your part number to ensure compatibility.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and interior accessories.
Do I need to have this part programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before we ship it to you. This saves you a trip to the dealership and the associated programming fees.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information.
Is this part difficult to install?
For most models like the Impala, the BCM is located under the driver’s side dash and is accessible for replacement. However, as with any automotive electronic repair, we recommend consulting a service manual or having a qualified technician perform the installation if you are not comfortable with the process.
Will this fix my ‘Service Airbag’ light?
A faulty BCM can trigger an airbag light. After installing this new module, the light may stay on until a ‘Setup SDM Primary Key in BCM’ procedure is performed with a professional scan tool to sync the systems.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.