Restore Your Impala’s Electrical System with a Plug-and-Play Solution
If you’re dealing with bizarre electrical problems in your 2006-2013 Chevy Impala, you’re not alone. Over my 20+ years in automotive diagnostics, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable car into a source of constant frustration. The BCM is the central command for your car’s body electronics—from power windows and locks to interior lights and security systems. When it starts to fail, the symptoms can be confusing and seem unrelated.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will program this module with the latest GM software specific to your Impala. It arrives at your door ready to be installed, getting you back on the road without a trip to the dealer.
Case Study: The Ghost in the Impala
A customer brought in an ’09 Impala with a laundry list of complaints: the radio would shut off randomly, the dome light would flicker, and sometimes the key fob wouldn’t work. They had already replaced the battery and checked the fuses. After connecting my scan tool, I saw a U0140 code—Lost Communication with Body Control Module. Instead of a complex wiring issue, the root cause was an internally failing BCM. Installing a pre-programmed module like this one resolved all the issues in under an hour. It’s a common failure, but with the right part, it’s a straightforward fix.
Common Signs of a Failing BCM
A faulty BCM can manifest in numerous ways. If your Impala is experiencing any of the following, a failing BCM is a likely culprit:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system acting up, causing no-start conditions or false alarms.
- ✔ Dashboard warning lights illuminating for no reason (e.g., ABS, Airbag, Traction Control).
- ✔ Communication error codes stored in the system, such as U0140, U0155, or B1001.
- ✔ Key fobs that stop working or have intermittent functionality.
A Straightforward Guide to BCM Installation
For the confident DIYer or professional technician, replacing the BCM in a 2006-2013 Impala is a manageable job. The BCM is typically located on the left-hand side of the dash, near the steering column.
- Safety First: Always disconnect the negative terminal from your car’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the Impala, you’ll need to remove the lower dash panel beneath the steering wheel to gain access. It’s a black box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all wiring harnesses, ensuring each one clicks into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc.—to confirm proper operation.
Important Post-Installation Notes
While this module is programmed for your vehicle, some GM systems require a ‘handshake’ after a new BCM is installed. Be aware of the following potential procedures:
- 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 new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
- No Core Charge: You can keep your old module, as there is no core charge or need to return it.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle is on this list and that your original part number is listed below for guaranteed compatibility.
Replaces 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:
- 2006-2013 Chevrolet Impala
- 2007-2012 GMC Acadia
- 2011-2013 Chevrolet Caprice
- 2008-2013 Cadillac CTS
- 2006-2011 Cadillac DTS
- 2008-2012 Buick Enclave
- 2007-2009 Chevrolet Equinox
- And many more GM trucks, vans, and SUVs as detailed in the original fitment list.
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we load the module with your car’s specific software using your 17-digit Vehicle Identification Number (VIN). This ensures it works correctly with the options and features your car was built with, eliminating the need for dealer programming.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep or dispose of your original module.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system and anti-theft errors on these vehicles. While other issues can cause it, replacing a bad BCM often resolves these messages.
What tools do I need for the post-installation procedures?
Procedures like the Airbag System Sync require a professional-grade bidirectional scan tool (like a Snap-on, Autel, or GM Tech 2). Most basic code readers cannot perform these functions. If you don’t have access to one, a local repair shop can perform the procedure for you.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s VIN. We cannot ship the module until we receive and program it with this information.