Is your 2006-2013 Chevrolet Impala suffering from strange and unpredictable electrical problems? One minute the power locks work, the next they don’t. The interior lights flicker, the security system acts up, or worse, the car won’t start at all. These are classic signs of a failing Body Control Module (BCM), the central command center for your vehicle’s body electronics. Don’t let these frustrating issues sideline your car. We offer a reliable, straightforward solution with this VIN-programmed BCM.
As the electronic hub for features like your lights, windows, security system, and keyless entry, a functioning BCM is critical for modern vehicle operation. When it fails, it can send confusing signals throughout the car, making diagnosis a nightmare for even seasoned mechanics. This replacement 2006-2013 Impala BCM is the definitive fix, arriving at your door pre-programmed with the latest GM software specifically for your vehicle’s VIN. This means you can skip the expensive trip to the dealership for programming—a savings of both time and money.
A Technician’s Notebook
I remember a 2011 Impala that came into the shop with a laundry list of complaints: intermittent no-start, security light on, and the radio display would randomly go blank. The owner had already replaced the battery and checked the alternator. A scan showed a U0140 code—Lost Communication with Body Control Module. After verifying power and ground at the BCM connector, it was clear the module itself was failing internally. These BCMs often suffer from internal solder joint fractures or component failure over time, leading to these exact kinds of baffling electrical gremlins. Installing a VIN-programmed module like this one resolved all issues instantly.
Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or won’t turn on at all.
- ✔ The security system alarm sounding randomly or the security light staying illuminated on the dash.
- ✔ Key fob or remote start features working intermittently or not at all.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ Communication error codes, such as U0140, stored in the system.
- ✔ A no-start or no-crank condition where the battery and starter are known to be good.
A Straightforward Guide to Installation
Replacing the BCM in your Impala is a manageable job for a DIYer. This module is located on the left (driver’s) side of the dash. Follow these steps for a successful installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove the necessary dash trim panels on the driver’s side to gain access to the BCM. It is typically mounted to a bracket.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and check for proper function of lights, locks, and other accessories.
- Final Checks: Some vehicles may require additional steps. If the airbag light is on, a professional scan tool is needed for the ‘Setup SDM Primary Key’ procedure. A Brake Pedal Position Relearn may also be required on some models.
Important Note: This module is programmed specifically for your vehicle using the VIN you provide at checkout. This ensures compatibility and proper function of all your car’s specific options. Plus, there is no core charge, so you can keep your old part.
Verified Vehicle Compatibility
This BCM, part number 15872421, is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list and provide your VIN upon purchase.
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
IMPALA 06-12 Body Control (BCM); (LH dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
YUKON 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 2500 VAN 11-12 Body Control (BCM); (center dash)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435 or 22860591
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
ESCALADE & EXT & ESV 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
STS 10 Body Control (BCM); center dash
TORRENT 07-09 Body Control (BCM); (center dash)
CTS 08-13 Body Control (BCM); LH dash or RH dash
G8 08-09 Body Control (BCM); (center dash)
IMPALA 13 Body Control (BCM); (LH dash), ID 22820315
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
LUCERNE 06-11 Body Control (BCM); (right side dash)
SRX 07-09 Body Control (BCM); LH dash
EXPRESS/SAVANA 3500 VAN 11-12 Body Control (BCM)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
VUE 08-10 Body Control (BCM); (center dash)
CAPRICE 11-13 Body Control (BCM)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
…and other models matching the part numbers listed below.
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
Frequently Asked Questions
Do I need to send you my old BCM?
No, there is no core charge for this part. You can keep your original module.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot program and ship the module without it.
Is this a difficult part to install myself?
For someone with basic mechanical skills, it is a straightforward process. The main challenge is accessing the module behind the dashboard trim. Since it comes pre-programmed, no special computer tools are required for the basic installation.
What if my airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be done with a professional-grade diagnostic scan tool.
Will this fix my exact problem?
This module will fix issues directly caused by a faulty BCM. While the symptoms listed are common, it’s always best to have a proper diagnosis performed to rule out other potential causes like wiring or sensor issues.