Restore Full Functionality to Your Vehicle’s Electronics
Are you battling frustrating electrical gremlins in your car? Flickering dash lights, windows that won’t go down, door locks with a mind of their own, or a security system that prevents your car from starting? These are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s comfort and convenience features, a faulty BCM can make driving a daily headache. In my 20+ years of experience, I’ve seen how a bad BCM can cause a cascade of seemingly unrelated issues, making diagnosis a real challenge. That’s why we offer a straightforward, reliable solution.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We utilize a professional Cloning Service that transfers the essential vehicle-specific data from your original BCM directly onto this replacement unit. This means the module arrives at your door pre-programmed with your car’s exact configuration, including the latest GM software updates. By cloning your data, you bypass the expensive and time-consuming trip to the dealership for programming. It’s the most efficient way to get your car back to 100%.
From the Diagnostic Bay
I remember a 2010 Cadillac STS that came into the shop with a truly baffling set of symptoms. The owner complained of intermittent no-start conditions, the radio would sometimes not turn on, and the driver’s side power window worked only when it wanted to. A standard scan showed a slew of communication errors (U-codes) with various modules. A less experienced tech might have started replacing random parts, but the pattern pointed directly to the BCM as the failing hub of the network. Instead of a costly new module and hours of programming, we used a cloned BCM. We simply transferred the data from his old, failing unit to the new one. The installation took less than an hour, and every single electrical issue was resolved instantly. It’s a perfect example of how the right part and process can save hundreds of dollars and immense frustration.
Is Your Vehicle Showing These BCM Failure Signs?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ The security system or anti-theft light is illuminated, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working.
- ✔ Wipers behaving erratically (e.g., won’t turn off).
- ✔ Multiple communication Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or U0164.
- ✔ Inconsistent operation of dashboard warning lights.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the 2010 Cadillac STS, the BCM is typically located in the center dash area. For other models, its position can vary (e.g., under the steering column, behind the glove box). A quick search for your specific model will confirm the location.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the module. Most have a locking tab that needs to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one.
- ✔ Reconnect Everything: Firmly plug all electrical connectors back into the new module. You should hear a click as they lock into place. Reconnect the negative battery terminal.
- ✔ Post-Installation Checks: Start the vehicle and test all body functions (windows, locks, lights, etc.). Note that some vehicles may require the additional relearn procedures mentioned below.
Important Post-Installation Procedures
While our cloning service handles the main programming, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal. The two most common procedures are:
- 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure brake lights and traction control function correctly.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified automotive technician if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for a wide array of GM cars, trucks, and SUVs. Please verify your part number or vehicle in the list below. This module is compatible with 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
What exactly is a ‘Cloning Service’?
Cloning is a process where we extract the unique, vehicle-specific software and security data from your original BCM and transfer it to the replacement unit. This makes the new module an exact digital copy of the old one, ensuring it works seamlessly with your vehicle’s existing systems and keys without any additional programming.
Do I need to send you my original BCM?
Yes. For the cloning service to work, we need your original module to retrieve the necessary data. After you place your order, we will provide instructions for sending your part to us. We will return your original module along with the newly programmed replacement.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is integral to the vehicle’s anti-theft system (Pass-Key, Passlock). A failing BCM is a very common cause of these warnings and no-start conditions. Our cloning service preserves your original key data, which is critical for solving this issue.
What if my airbag light comes on after installation?
This is a known possibility. It simply means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A repair shop with a professional-grade bidirectional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to clear the light.
Is this a difficult part for a DIYer to replace?
For most DIYers with basic tools, this is a very manageable job. The main challenge is typically accessing the module’s location within the dash. Since our cloning service eliminates the need for computer programming, the most complex part of the job is already done for you.