Restore Your Vehicle’s Electronic Stability and Functionality
Are you battling bizarre electrical problems in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or a dashboard that lights up with random warnings are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. In my 20+ years of diagnostic work, I’ve seen how a single failing module can make a perfectly good car or truck feel unreliable. This isn’t just an inconvenience; it can be a serious safety concern.
We offer a dependable and straightforward solution: a replacement GM Body Control Module 15093910, professionally programmed to your vehicle’s specific VIN. Forget expensive dealership visits and programming fees. We flash the module with the latest official GM software before it ships, so it arrives at your door ready for a direct-fit installation. This is the most efficient way to get your vehicle back to operating as it should, restoring control over everything from your interior lights to your anti-theft system.
A Technician’s Notebook: The Case of the Haunted Express Van
I remember a 2011 Chevy Express 3500 that came into the shop with a list of complaints that sounded like the van was possessed. The dome lights would flicker randomly, the radio would shut off, and occasionally, it would refuse to start, flashing a ‘Service Theft System’ message. The owner had already replaced the battery and checked the grounds. After connecting my scan tool, I found multiple U-codes (communication errors) between various modules. This pointed directly to a network issue, and the common link was the BCM. After swapping in a VIN-programmed BCM, every single issue vanished. It’s a powerful reminder of how this one component is the key to solving dozens of electrical gremlins.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft system light is on, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights (like ABS or Airbag) appearing without a clear cause.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes.
- ✔ Wipers activating on their own or not responding to the switch.
A Straightforward Guide to BCM Installation
Installing your pre-programmed BCM is a manageable job for a confident DIYer or any professional technician. While the exact location varies, the general process is consistent.
- 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: Depending on your model (e.g., Impala, Acadia, Express Van), the BCM is typically found under the driver’s side dash, behind the glove box, or in the center console area. A quick search for your specific model will confirm its location.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Securely plug in all 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, wipers, etc.—to confirm proper operation.
Important Post-Installation Steps
While our programming handles the critical functions, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following:
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the systems and is not something that can be done without it.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old module. This saves you the time and expense of a core return.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any part of the process.
Will This Fit My Vehicle?
This BCM is a direct replacement for a wide range of General Motors vehicles and is compatible with numerous original part numbers. Please verify your vehicle is on this list and that your original part number is listed below.
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
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
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the BCM with the exact software and settings your specific vehicle requires. This ensures perfect compatibility and function right out of the box.
Is this part difficult to install?
For someone with moderate mechanical skill, it’s a very manageable job. The main challenge is accessing the module, which is usually under the dash. Since our module is pre-programmed, no special computer tools are needed for the basic installation.
Will this fix a ‘Service Theft System’ warning?
In many cases, yes. The BCM is a key part of the vehicle’s anti-theft system. A failing BCM is a very common cause of this warning message and a no-start condition. Our VIN programming ensures the security information matches your vehicle’s keys.
Do I have to send my old BCM back?
No. We do not require a core return. You can keep or dispose of your original module, saving you the hassle and cost of shipping it back.
What if my airbag light comes on after installation?
This is an indication that the new BCM needs to be electronically synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool with the ability to perform the ‘Setup SDM Primary Key in BCM’ procedure. A local repair shop can easily perform this service.