Tired of Unpredictable Electrical Problems in Your GM Vehicle?
As a technician with over two decades of experience under the hood, I’ve seen it all. But few things are as frustrating for a car owner as the bizarre, seemingly random issues caused by a failing Body Control Module (BCM). One day your power windows have a mind of their own, the next your interior lights won’t turn off, and then—the ultimate headache—your car refuses to start. If this sounds familiar, you’ve likely pinpointed the culprit: a faulty BCM. This isn’t just an inconvenience; it’s a critical failure in your vehicle’s central nervous system.
The BCM is the traffic controller for your car’s body electronics, managing everything from your key fob and security system to your lighting and power accessories. When it starts to fail, it sends confusing signals, leading to the chaos you’re experiencing. Dealerships will quote you a sky-high price for a new module, followed by hefty programming fees. Our solution bypasses that completely. We provide a fully tested, replacement 2014-2017 Regal BCM that is programmed specifically for your car using the data from your original unit.
A Technician’s Notebook: The Intermittent No-Start
I recently had a 2015 Buick LaCrosse towed into my shop. The owner was at his wit’s end. The car would start perfectly for a week, then suddenly refuse to crank, leaving him stranded. He’d already replaced the battery and checked the starter. After hooking up my scan tool, I saw a flurry of U-codes (U0100, U0140), indicating a loss of communication between modules. The BCM wasn’t properly communicating with the engine computer or other systems. By cloning his original BCM data to one of our reliable replacement units, we solved the problem permanently. It wasn’t a mechanical issue; it was a data issue, which is precisely what our programming service corrects.
Is Your Vehicle Showing These Telltale Signs?
A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Erratic power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system light is flashing, and the engine won’t crank (theft-deterrent issue).
- ✔ The key fob works intermittently or not at all.
- ✔ Horn honking randomly or not working when pressed.
- ✔ A dashboard lit up with warning lights (Check Engine, ABS, Airbag).
- ✔ Communication error codes stored, such as U0100, U0140, or B1001.
A Straightforward Guide to Installation
Our service handles the complex programming, making the physical swap simple. Once you receive your plug-and-play module from us, the installation is straightforward for a DIYer with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the 2014-2017 Buick Regal, the BCM is typically located behind the lower left-hand side of the dashboard. For other compatible models, its location may vary (e.g., LH kick panel, RH cowl). A quick search for your specific model will confirm its position.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in place of the old one. Reconnect all electrical connectors firmly, ensuring they click into place.
- Power Up: Reconnect the negative battery terminal.
- Test All Functions: Start the vehicle and test your power windows, locks, lights, key fob, and other accessories to confirm everything is working correctly.
Important Post-Installation Notes
While our cloning service makes this a true plug-and-play repair, some GM vehicles may require a simple relearn procedure. Don’t be alarmed if you see a warning light initially.
- Airbag System Sync: In some cases, the airbag light may illuminate after installation. This means the new BCM and the airbag system (SDM) need to be re-synchronized. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
- Brake Pedal Position Relearn: You may need to perform a brake pedal position sensor relearn to ensure your brake lights and traction control system function as intended. This can often be done with a high-end scan tool.
Verified Vehicle Compatibility
This module is a direct-fit replacement for part number 13593776 and is interchangeable with the following part numbers: 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, and 13594564. It is guaranteed to fit the following vehicles:
- 2014-2017 Buick Regal (LH dash)
- 2014-2016 Cadillac ELR (RH cowl / RH engine compartment)
- 2014-2016 Cadillac SRX (LH dash)
- 2014-2015 Chevrolet Camaro (RH dash)
- 2014-2015 Chevrolet Malibu (LH kick panel)
- 2016 Chevrolet Malibu Limited (VIN 1) (LH kick panel)
- 2014-2016 Chevrolet Spark EV (left lower a-pillar)
- 2014-2015 Chevrolet Volt (RH engine compartment)
- 2014-2016 Buick LaCrosse (LH kick panel)
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Frequently Asked Questions About Our BCM Service
Frequently Asked Questions
How does the mail-in 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 extract the critical vehicle-specific data and flash it onto the replacement module. We then ship the ready-to-install BCM back to you, typically within 1-2 business days.
Do I need to send my keys with the module?
No, you do not need to send your keys. Because we are cloning the data from your original BCM, the replacement module will already recognize your existing keys, saving you the hassle and expense of key reprogramming.
Will this fix my specific problem?
This service corrects issues caused by a faulty BCM. If your vehicle has been properly diagnosed and the BCM is identified as the root cause of the electrical problems, our programmed module is the solution. It addresses internal hardware and software failures within the module itself.
What is a ‘core’ and do I need to return my old part?
A core is your original, failed part. For this specific programming service, we require your original BCM to perform the data transfer. After the service is complete, we ship both your original module and the newly programmed replacement back to you. There is no separate core charge or need to return it again.
Is this a permanent fix?
Yes. We use high-quality, fully tested replacement modules and a professional data cloning process to ensure a lasting and reliable repair. This service is designed to restore your vehicle’s factory functionality and eliminate the problems caused by the original failing BCM.