Restore Control and Eliminate Electrical Gremlins
Are you tired of chasing down bizarre electrical issues in your GM vehicle? One minute the power windows work, the next they don’t. The security light flashes randomly, or the dashboard lights up like a Christmas tree for no reason. As a technician with over 20 years of experience, I can tell you that these frustrating, intermittent problems often point to one culprit: a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features, and when it fails, it can cause widespread chaos. This isn’t just an annoyance—it can affect safety systems and even prevent your car from starting.
This is your direct, hassle-free solution. We offer a reliable GM Body Control Module, professionally programmed with the latest GM software updates specifically for your vehicle. Simply provide your VIN during checkout, and we handle the complex programming for you. This means no expensive trips to the dealership, no waiting for appointments, and no paying for hours of diagnostic and programming labor. You receive a part that is ready for installation right out of the box.
A Technician’s Notebook: The Case of the Haunted Impala
A customer brought in a 2009 Chevy Impala with a list of complaints that sounded like the car was possessed. The radio would turn on and off by itself, the interior lights would flicker while driving, and occasionally, the car wouldn’t start, showing only a ‘Service Theft System’ message. They had already replaced the battery and checked the alternator. After hooking up my scan tool, I saw a dozen communication error codes (U-codes) pointing to a network failure. Instead of a complex wiring issue, my experience pointed straight to the BCM. A failing GM Body Control Module can disrupt the entire data network, causing other modules to report errors. We installed a VIN-programmed BCM, and every single issue vanished instantly. It’s a classic example of how one central component can create a multitude of confusing symptoms.
Is Your Vehicle Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, a replacement module is likely the fix you need:
- ✔ 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 heating and A/C controls.
- ✔ Intermittent no-start conditions accompanied by a security light.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ False warnings on the instrument cluster (e.g., ‘Door Ajar’).
- ✔ Communication error codes, such as U0140, U0155, or other U-series DTCs.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a confident DIYer. While the exact location varies by model (see fitment list), the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most of these vehicles, the BCM is located under the driver’s side or passenger’s side of the dashboard, or in the center console area. A quick search for your specific model will confirm its position.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair.
- Perform Relearns (If Necessary): In some cases, you may see an airbag light or have issues with brake light operation. This is normal. Follow the post-installation procedures noted below to sync the systems.
Important Post-Installation Notes
While our GM Body Control Module is programmed for your VIN, some vehicle systems require a final handshake after installation. Be aware of these potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade scan tool. This syncs the new BCM with the airbag module.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control functionality.
Disclaimer: We strongly recommend consulting a factory service manual or a qualified professional for vehicle-specific instructions. No core charge is required; you can keep your old part.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM cars, trucks, and SUVs. Please verify your vehicle is on this list and that the part number matches one of the listed interchanges.
EXPRESS/SAVANA VANS 08-12 Body Control (BCM); (center dash) – check specific engine options
IMPALA 06-13 Body Control (BCM); (LH dash)
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE/YUKON/SUBURBAN/AVALANCHE/ESCALADE 10 – Check ID on original module (e.g., 25892622, 20815898)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
CAPTIVA SPORT 12 Body Control (BCM); (center dash) – Check ID on original module
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 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 (08 only)
G8 08-09 Body Control (BCM); (center dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
SRX 07-09 Body Control (BCM); LH dash
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)
This part replaces the following 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 do any programming myself?
No. We program the module to the VIN you provide before shipping. It arrives ready for installation, saving you a trip to the dealer.
Is this a simple plug-and-play installation?
For most functions, yes. You plug it in, and your core body electronics will work. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake systems, which needs a compatible scan tool.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive it.
What if my original part number isn’t 15872388?
That’s okay. This module is a direct replacement for a long list of interchangeable GM part numbers. As long as your original part number is on our list, this module will work perfectly.
Is there a core charge?
No, there is no core charge. You are not required to send your old BCM back to us.
Will this fix my ‘Service Theft System’ light?
A faulty BCM is a very common cause of this issue. While we can’t guarantee it will solve every case without a proper diagnosis, it is the most frequent solution for this problem.