Restore Your Buick’s Brain and End Electrical Frustration
Are you chasing electrical gremlins in your Buick Regal? One window won’t go down, the interior lights have a mind of their own, or worse, you’re dealing with random warning messages on your dash. As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times. More often than not, the culprit is a failing Body Control Module (BCM)—the central command center for your car’s comfort and convenience features.
A faulty BCM can turn your reliable Regal into a source of daily annoyance. The dealership solution often involves a brand new module, multiple days in the shop, and a hefty bill for programming. We offer a smarter, more direct solution. This isn’t just a part in a box; it’s a comprehensive service designed to get you back on the road with minimal hassle. We provide a fully tested replacement BCM that is programmed by cloning the data from your original unit. This ensures a seamless, plug-and-play installation without any need for expensive dealership tools or software subscriptions.
From the Diagnostic Bay: The Case of the Chaotic Regal
A customer brought in a 2015 Regal with a laundry list of bizarre symptoms: the radio would shut off randomly, the driver’s side power lock was unresponsive, and the anti-theft light would flicker intermittently. They had already replaced the battery and checked fuses, but nothing worked. After connecting my scan tool, I saw multiple communication error codes (U-codes) pointing to a network issue. Instead of a complex wiring problem, my experience pointed straight to the BCM. We performed our cloning service, and installing the programmed module took less than an hour. The car’s electrical systems immediately returned to normal. It’s a classic example of how a single failing module can cause widespread, confusing problems.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a failing BCM is a likely cause. In my shop, I’ve seen these symptoms point to a needed 2014-2017 Regal Body Control Module replacement time and time again.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system acting up, preventing the car from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers activating on their own or not turning on.
- ✔ False warning lights on the instrument cluster.
- ✔ Communication DTCs such as U0140, U0155, or other U-series codes being stored.
A Straightforward Guide to Your BCM Swap
Installing your newly programmed BCM is a manageable job for a DIYer with basic tools. For the 2014-2017 Regal, the module is typically located behind the left side of the dashboard. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Access the Module: On your Regal, you will likely need to remove the lower dash panel on the driver’s side to gain access to the BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your pre-programmed replacement BCM and securely reconnect all the electrical connectors. You should hear a click as they lock into place.
- Final Steps: Re-install any panels you removed and reconnect the negative battery terminal. Start the vehicle to confirm that the issues are resolved.
Important Post-Installation Information
Our cloning service makes this as close to plug-and-play as possible. However, on some GM vehicles, a couple of quick sync procedures may be needed after installation. This is normal and ensures all vehicle systems communicate correctly with the new BCM.
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the airbag system with the BCM.
- Brake Pedal Position Relearn: To ensure correct brake light and traction control operation, a brake pedal position sensor relearn might be necessary. This can also be done with a capable diagnostic tool.
Verified Vehicle Compatibility
This service and part are a direct solution for a 2014-2017 Regal Body Control Module and other GM vehicles. Please verify your part number is on our cross-reference list. This module is located in different places depending on the model.
- Buick LaCrosse (2014-2016): LH kick panel
- Buick Regal (2014-2017): LH dash
- Cadillac ELR (2014-2016): RH cowl / RH engine compartment
- Cadillac SRX (2014-2016): LH dash
- Chevrolet Camaro (2014-2015): RH dash
- Chevrolet Malibu (2014-2016 Limited): LH kick panel
- Chevrolet Spark EV (2014-2016): Left lower A-pillar
- Chevrolet Volt (2014-2015): RH engine compartment
This module is compatible with part numbers: 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, and 13594564.
Frequently Asked Questions
How does the programming service work?
It’s simple! After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will clone the essential security and vehicle-specific data onto the replacement module. We then ship the plug-and-play replacement back to you, typically within 1-2 business days.
Do I need to send my original BCM?
Yes. To ensure a true plug-and-play solution that works with your existing keys and security system, we must clone the data from your original module. This process saves you from expensive dealership programming.
Is there a core charge?
No, there is no core charge for this service. After we clone the data, you are welcome to keep your original module.
Will this fix my specific problem?
This BCM corrects issues directly related to the module itself, such as power accessory failures and communication errors. While it solves the most common electrical problems, you should always ensure your vehicle has been properly diagnosed by a professional.
What tools do I need for the installation?
For most models, you’ll only need basic hand tools like a socket set and a trim removal tool to access the BCM. In the rare event a post-install procedure is needed, a professional-grade scan tool would be required.