Restore Control and End Electrical Frustrations in Your GM Vehicle
Are you chasing down bizarre electrical gremlins in your 2006-2013 Chevy Impala? One minute the power locks work, the next they don’t. The interior lights flicker randomly, or worse, the security light is on and the car won’t start. As a technician with over two decades of diagnostic experience, I can tell you that these frustrating, seemingly unrelated issues often point to one central culprit: a failing Body Control Module (BCM).
The BCM is the electronic nerve center of your vehicle’s body and accessory functions. When it starts to fail, it can send confusing signals throughout the car, making diagnosis a nightmare for the average owner. This isn’t just an inconvenience; a faulty BCM can impact safety systems and your vehicle’s reliability. That’s why we offer a dependable, straightforward solution: a replacement BCM, pre-programmed specifically for your car’s VIN.
A Technician’s Notebook: The Case of the Haunted Impala
A customer brought in a 2011 Impala with a list of complaints that sounded like the car was possessed. The radio would turn off, the driver’s side window was stuck down, and the “Service Theft System” message was on the dash. They had already replaced the battery and checked fuses with no luck. A quick scan with a pro tool revealed multiple U-codes (communication errors) pointing back to the BCM. Instead of a complex, multi-part repair, the fix was a single component. By installing a VIN-programmed 2006-2013 Impala BCM, we resolved every single issue in one go, saving the customer hundreds in diagnostic time and dealer programming fees.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a failing BCM is the likely cause. This module is designed to be a direct fix for these common problems:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ Malfunctioning windshield wipers.
- ✔ The security system light is illuminated, and the vehicle may not start.
- ✔ False warnings on the instrument cluster (e.g., door ajar).
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes.
- ✔ Inconsistent horn operation.
Your Straightforward BCM Installation Guide
We make this repair as simple as possible. Because we program the module to your VIN before shipping, you can skip the expensive trip to the dealership. While the exact location varies slightly by model, the process is generally straightforward for a DIYer with basic tools.
- 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 near the steering column or behind the lower dash panel.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all functions: windows, locks, lights, wipers, etc.
Important Post-Installation Information
In some cases, additional steps may be needed after installation. This is normal and ensures all vehicle systems communicate correctly.
- ✔ Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
- ✔ No Core Charge: You are not required to send your old part back. This saves you time and money on return shipping.
Disclaimer: Procedures can vary by vehicle. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 15948439 and a wide range of other original part numbers. It is guaranteed to fit the following vehicles:
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
This module replaces 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.
Frequently Asked Questions
How does the programming process work?
It’s simple. After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). Our technicians will then use the latest GM software to program the BCM specifically to your car’s configuration before we ship it out.
Do I need to take my car to a dealer after installation?
No! Our pre-programming service eliminates the need for dealer-level programming, saving you significant time and money. In some rare cases, minor relearn procedures may be needed as outlined above, but the core programming is done.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that manages many of your car’s electronic accessories, such as power windows, locks, interior/exterior lighting, security system, and wipers. It acts as a central hub for these functions.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module, so you don’t have to worry about the cost or hassle of return shipping.
What if my airbag light comes on after I install the BCM?
This can happen because the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A qualified mechanic with a professional bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.