Restore Full Functionality to Your GM Vehicle
Are you battling bizarre electrical issues in your 2006-2013 Chevrolet Impala? Flickering interior lights, a security system that randomly engages, power windows with a mind of their own, or even a frustrating no-start condition can all point to one central culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, a faulty BCM can create a cascade of problems that are often difficult and expensive to diagnose. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
This replacement BCM, part number 20815898, is the definitive solution to get your vehicle back to factory-spec operation. We take the guesswork and high dealership costs out of the equation. Before we ship your part, we perform a complete cloning service. Simply provide us with your vehicle’s VIN at checkout. We then program the module with the latest GM software specific to your Impala, ensuring it communicates flawlessly with your car’s other systems right out of the box. This process eliminates the need for a trip to the dealer for expensive programming.
Case Study: A Tricky Diagnosis
I remember a 2011 Impala that came into my shop with a classic ‘electrical ghost’ problem. The customer complained of the radio turning off, the anti-theft light flashing intermittently, and the car refusing to start on damp mornings. They had already replaced the battery and checked the alternator. After hooking up my scan tool, I saw several U-codes (U0140, U0155) indicating a loss of communication with the BCM. Instead of a complex wiring chase, we identified the BCM as the internal failure point. Installing a pre-programmed module like this one resolved all issues in under an hour, saving the customer hundreds compared to the dealership quote.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely cause. Replacing your 2006-2013 Impala BCM can be the most direct path to a reliable fix.
- ✔ Erratic or non-functional power windows, door locks, and interior lighting.
- ✔ The security or anti-theft system light stays on or flashes, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating for no reason.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), often in the U-code family (e.g., U0140).
- ✔ Wipers or climate control operating incorrectly.
A Straightforward Guide to Installation
Installing your new 2006-2013 Impala BCM is a manageable job for a DIY enthusiast. On most Impalas from this generation, the BCM is located on the left (driver’s) side of the dash, often near the steering column or behind the lower dash panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. Wait a few minutes for all systems to power down.
- Access the Module: You will likely need to remove the lower dash panel beneath the steering wheel. This is typically held in by a few screws and clips.
- Locate and Unplug: Identify the BCM. It’s a plastic box with several large multi-pin electrical connectors. Carefully press the release tabs on each connector and pull them straight out. Do not force them.
- Remove the Old BCM: The module itself is usually secured with a couple of small bolts or nuts. Remove them and take out the old BCM.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly back into the new module. You should hear or feel a click as they lock into place. Reinstall the dash panel.
- Final Steps: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) for 10-15 seconds to allow the systems to initialize before starting the vehicle. Check for proper function of lights, locks, and windows.
Important Post-Installation Notes
While our programming service handles the majority of the setup, some vehicles may require additional steps after installation:
- 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: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for a wide range of General Motors vehicles and interchanges with numerous part numbers, ensuring you get the correct component. Please verify your vehicle is on this list. This module is a confirmed fit for the 2006-2013 Impala BCM and the following applications:
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08-13 Body Control (BCM); LH dash (or RH dash on some 08 models)
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-12 Body Control (BCM)
EXPRESS 3500 VAN 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-12 Body Control (BCM)
SAVANA 3500 VAN 08-12 Body Control (BCM)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
Interchangeable 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, 22820315
Do I need to send my old BCM to you?
Do I need to send my old BCM to you?
No, you do not need to send your original module to us beforehand. Our service is a programming service based on your VIN. After you receive and install the new module, we always return your original core to you along with the programmed replacement; we do not keep it.
Is this part truly plug-and-play?
Yes, for the vast majority of vehicles. We program it with your car’s specific data using your VIN, so it’s ready for installation without needing a dealer visit. In a small number of cases, as noted above, a simple relearn procedure for the airbag or brake pedal sensor may be needed, which can be done with a common professional scan tool.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically find this on your vehicle’s registration, insurance card, or on a plate on the driver’s side dashboard visible through the windshield.
What if my original part number is not 20815898?
That’s okay. This BCM replaces a long list of original GM part numbers. Please check the ‘Interchangeable Part Numbers’ list in the description above. As long as your original part number is on that list, this module will be the correct replacement for your vehicle.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the Pass-Key III and other GM anti-theft systems. A failing BCM is a very common cause of security system faults and no-start conditions. Our programming ensures the security data is correctly loaded for your VIN.