Restore Full Functionality to Your GM Truck or Car
Are you chasing down frustrating electrical gremlins in your 2015 GMC Sierra or another compatible GM vehicle? Intermittent power windows, flickering dash lights, a radio that has a mind of its own, or even a no-start condition can often be traced back to a single, vital component: the Body Control Module (BCM). As the central nervous system for your vehicle’s electronics, a failing BCM can cause a cascade of baffling issues. Dealerships will quote you a fortune for a new module plus mandatory, expensive programming. We offer a smarter, more direct solution.
This is a fully tested, replacement BCM that comes pre-programmed with your vehicle’s exact data. Our professional mail-in cloning service makes this a true plug-and-play repair. Simply send us your original BCM, and we’ll transfer all the critical information—including VIN, mileage, and key data—to this replacement unit. We ship it back to you ready for installation, eliminating the need for a trip to the dealer and saving you hundreds in programming fees.
Case Study: The Ghost in the Sierra
A customer brought in a 2015 Sierra 1500 that was driving him crazy. The horn would honk randomly, the interior lights would stay on, and the key fob worked only half the time. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple communication loss codes (U-codes) pointing to the BCM. Instead of just installing a blank module, we cloned his original. The replacement part went in, and every single issue vanished instantly. This is the power of a correctly programmed module—it’s not just a part, it’s a complete solution.
Common Signs of a Failing BCM
If your vehicle is exhibiting these symptoms, a faulty Body Control Module is the most likely cause. Don’t let these issues leave you stranded.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights flickering or staying on.
- ✔ Security system faults or the vehicle not recognizing the key fob.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Communication error codes stored, such as U0100, U0140, or other U-series codes.
- ✔ Complete no-crank, no-start condition where the starter doesn’t engage.
A Straightforward Guide to Installation
Installing your pre-programmed BCM is a job most DIYers can handle with basic tools. In most GM trucks like the Sierra and Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access to the module. It’s typically a black plastic box with several large multi-pin connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all the electrical connectors, ensuring they click securely into place.
- Final Steps: Re-install the dash panel and reconnect the negative battery terminal. Your vehicle is now ready to start.
Important Post-Installation Notes
Our programming service handles over 99% of the setup. However, in some vehicles, specific systems may require a quick relearn procedure. This is normal and does not indicate a problem with the module.
- Airbag System Sync: If the 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 BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor recalibration might be necessary to ensure brake lights and stability control function correctly.
- No Core Required: You do not need to return your original module after the service is complete. There is no core charge.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Guaranteed Vehicle Compatibility
This module is a direct-fit, programmed replacement for the listed part numbers and is verified to work with the following vehicles. Please match your part number (13592137, 13506935, 13506936, 13587704, or 13594764) to ensure compatibility.
- 2015 Chevrolet Corvette
- 2015-2016 Chevrolet Impala (New Style)
- 2015 GMC Sierra 1500 / 2500 / 3500
- 2015 GMC Sierra Denali 1500 / 2500 / 3500
- 2015 Chevrolet Silverado 1500 / 2500 / 3500
- 2015 Chevrolet Suburban 1500
- 2015 Chevrolet Tahoe
- 2015 GMC Yukon & Yukon XL 1500
- 2015 Cadillac Escalade & Escalade ESV
- 2015 Cadillac XTS
- 2015-2016 Cadillac ATS
- 2015-2016 Cadillac CTS
- 2015-2018 Chevrolet Sonic
Frequently Asked Questions
Frequently Asked Questions
How does the mail-in programming service work?
After you purchase, we will provide you with shipping instructions to send your original BCM to us. Once we receive it, our technicians will extract the necessary data and program the replacement module. We then ship the ready-to-install BCM back to you, typically within 1-2 business days.
Why is this better than buying a BCM from a dealer?
Our service saves you significant time and money. A new BCM from the dealer is just a blank box; you still have to pay for towing and several hours of labor for them to program it. Our module arrives pre-programmed for your specific vehicle, making it a simple plug-and-play installation.
Will I need any special tools to install this?
No. For most vehicles like the 2015 Sierra, you only need basic hand tools like a socket set and a trim removal tool to access the BCM under the dashboard. No programming tools are required.
Is my original BCM returned to me?
Yes, we ship your original module back to you along with the newly programmed replacement. There is no core charge or need to send it back again.
What if my original BCM is completely dead or not communicating?
In most cases, even if the BCM has failed, we can still extract the vital data needed for cloning. Please contact us if your module is severely damaged (e.g., by fire or water) to discuss options.
What does ‘Setup SDM Primary Key in BCM’ mean?
This is a security procedure that syncs the Body Control Module with the airbag control module (SDM). It’s only necessary if your airbag light comes on after installation and can be performed by most professional repair shops with a capable diagnostic tool.