Restore Your Impala’s Electrical System with a Plug-and-Play Solution
If you’re dealing with bizarre electrical issues in your 2006-2013 Chevrolet Impala—like flickering lights, malfunctioning gauges, or power accessories with a mind of their own—a failing Body Control Module (BCM) is often the culprit. I’ve seen it hundreds of times in my shop: a perfectly good car rendered unreliable by its central electronic nerve center. This isn’t just an annoyance; it can affect security systems and vehicle stability. This replacement BCM is your direct, reliable fix, arriving programmed to your vehicle’s specific VIN for a straightforward installation.
A customer brought in their ’09 Impala with a classic ghost-in-the-machine problem. The radio would turn off, the security light would flash randomly, and sometimes the power windows wouldn’t work. They’d already replaced the battery and checked fuses. After connecting my scan tool, I saw multiple communication loss codes (U-codes) pointing to the BCM. Water intrusion from a leaky cowl seal had caused corrosion on the BCM’s main connector. Swapping in a pre-programmed module like this one had the car back to 100% functionality in under an hour, saving the customer a tow to the dealership and hundreds in diagnostic and programming fees.
Common Signs of a Failing BCM
The BCM acts as the central hub for your car’s body electronics. When it starts to fail, the symptoms can be widespread and confusing. Here’s what to look for:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors not working correctly.
- ✔ The security system acting up, causing no-start conditions or false alarms.
- ✔ Instrument cluster gauges behaving erratically or not working at all.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
- ✔ Inconsistent A/C and heater blower motor operation.
A Straightforward Guide to Your 2006-2013 Impala BCM Installation
Installing your new BCM is a manageable job for a confident DIYer. Our pre-programming service eliminates the most difficult step, saving you a trip to the dealer. Just follow these general steps:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: On the 2006-2013 Impala, the BCM is typically located on the left (driver’s) side of the dashboard, often behind the lower dash panel near the steering column.
- Remove Connectors: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed to be released. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket. Install the new module in its place.
- Reconnect Everything: Plug the electrical connectors firmly into your new BCM. Reconnect the negative battery terminal.
- Post-Install Checks: Start the vehicle and test all body functions—lights, windows, locks, radio, etc. Note that some models may require the additional relearn procedures mentioned below for full functionality.
Important Post-Installation Notes
While we handle the main programming, some vehicle systems may need to be re-synced after the new BCM is installed. This is a normal part of the process.
- Airbag System Sync: If your 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper operation of the brake lights and traction control system.
- No Core Charge: You are not required to return your old BCM. There is no core charge or fee associated with this purchase.
Verified Vehicle Compatibility
This module is a direct replacement for part number 20815898 and a wide range of other GM part numbers. It is guaranteed to fit the following models (please verify your specific options):
This BCM is a direct replacement for the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Fits Models Including:
- Chevrolet Impala (2006-2013)
- Chevrolet Monte Carlo (2006-2007)
- Chevrolet Equinox (2007-2009)
- Chevrolet Traverse (2009-2012)
- Chevrolet Express/GMC Savana Vans (2008-2012)
- Chevrolet Tahoe/Suburban/Avalanche (2010 with specific IDs)
- GMC Acadia (2007-2012)
- GMC Yukon / Yukon XL (2010 with specific IDs)
- Cadillac CTS (2008-2013), DTS (2006-2011), SRX (2007-2009), Escalade (2010 with specific IDs)
- Buick Enclave (2008-2012), Lucerne (2006-2011)
- And many more. Always match your part number or contact us with your VIN to confirm.
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. We use this to load the correct GM-certified software and calibrations for your specific car onto the BCM before shipping it. This ensures it communicates correctly with your other vehicle modules.
Is this a plug-and-play part?
For most functions, yes. Because we program it to your VIN, it eliminates the need for expensive dealer-level programming. However, as noted, some vehicles may require minor ‘relearn’ procedures for the airbag or brake systems, which may need a professional scan tool.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system issues, including the ‘Service Theft System’ message and no-start problems. While not a guarantee without a proper diagnosis, replacing a bad BCM often resolves these faults.
Do I need to return my old BCM?
No. We do not require you to send back your original part. There is no core charge for this item, which simplifies the process for you.
What tools do I need for installation?
For a 2006-2013 Impala, you’ll typically only need basic hand tools like a socket set and a trim removal tool to access the BCM behind the driver’s side lower dash panel. No special programming tools are required from your end.