Tired of Your Sierra’s Electrical Gremlins? Get a Permanent Fix.
As a technician with over two decades of experience, I’ve seen it all when it comes to baffling electrical problems. Your 2015 GMC Sierra is a fantastic truck, but when the Body Control Module (BCM) starts to fail, it can feel like the vehicle is possessed. Flickering lights, power windows with a mind of their own, a radio that won’t turn off, or random warning chimes—these are all classic signs that the BCM, the central nervous system for your truck’s body electronics, is on its way out.
Forget the expensive trip to the dealership and the days of downtime. We offer a straightforward, reliable solution. This isn’t just a replacement part; it’s a comprehensive programming service. You send us your original BCM, and we meticulously transfer all its vital data—including VIN, mileage, and security information—to this fully tested replacement module. The result? A true plug-and-play component that restores full functionality without any need for dealer-level programming tools on your end.
Is Your Truck Showing These Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The radio or infotainment system behaving erratically or not turning off.
- ✔ False warning lights on the dashboard, such as the security or airbag light.
- ✔ Communication error codes with other modules (e.g., U0100, U0140).
- ✔ The horn honking unexpectedly or not working when pressed.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with a frustrating problem: the dome lights would stay on, draining the battery overnight. They had already replaced the battery and checked all the door jamb switches. After connecting my scan tool, I found no specific codes pointing directly to the BCM. However, by observing live data, I could see the BCM wasn’t receiving the correct ‘door closed’ signal, even though the switches were good. This pointed to an internal failure in the module’s logic board. We performed our cloning service on a replacement 2015 Sierra BCM, and the new module fixed the issue instantly. It’s a perfect example of how a faulty BCM can cause confusing symptoms without throwing obvious trouble codes.
Your Step-by-Step BCM Replacement Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most 2015 Sierra and Silverado models, the BCM is located under the steering column, often behind a lower dash panel. Consult your service manual for the exact position.
- ✔ Remove the Old Module: Carefully disconnect all electrical connectors. They have locking tabs, so be gentle. Then, unbolt or unclip the module from its mounting bracket.
- ✔ Ship Us Your Module: After purchase, we will provide you with shipping instructions. Pack your original BCM securely and send it to us. Ensure your contact information is correct so we can reach you.
- ✔ We Program Your New BCM: Once we receive your original module, we will clone all the data to the replacement unit, typically within one business day.
- ✔ Install the New Module: We’ll ship your newly programmed BCM back to you. Installation is the reverse of removal. Secure the module, plug in all connectors firmly, and reconnect the battery.
Important Post-Installation Checks
Our cloning process makes this a near plug-and-play repair. However, in some GM vehicles, certain systems may require a quick sync-up. Please be aware of the following:
- 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 is a simple sync that re-establishes communication between the new BCM and the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure perfect brake light and traction control operation. This also requires a compatible diagnostic tool.
Disclaimer: Vehicle systems vary. For procedures specific to your vehicle, always refer to a factory service manual or consult with a qualified automotive technician.
Guaranteed Fitment for Your GM Vehicle
This programming service and module are compatible with part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is verified to fit the following models:
- ✔ 2015 Chevrolet Corvette
- ✔ 2015-2016 Chevrolet Impala (New Style)
- ✔ 2015 Chevrolet Silverado 1500, 2500, 3500
- ✔ 2015 Chevrolet Suburban 1500
- ✔ 2015 Chevrolet Tahoe
- ✔ 2015-2018 Chevrolet Sonic
- ✔ 2015 GMC Sierra 1500, 2500, 3500
- ✔ 2015 GMC Sierra Denali 1500, 2500, 3500
- ✔ 2015 GMC Yukon & Yukon XL 1500
- ✔ 2015 Cadillac Escalade & Escalade ESV
- ✔ 2015-2016 Cadillac ATS
- ✔ 2015-2016 Cadillac CTS
- ✔ 2015 Cadillac XTS
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The entire point of our service is to handle the programming for you. We clone your original BCM’s data, so the replacement module is plug-and-play when you receive it, saving you from expensive dealer fees.
What data is transferred from my old BCM?
We transfer all the critical vehicle-specific information, including the VIN, mileage, key fob data, and settings for the options your truck is equipped with. This ensures seamless integration.
How long does the programming service take?
Once we receive your original module, we typically complete the cloning and ship your new, programmed BCM back out within 24-48 business hours. We’ll send you tracking information as soon as it ships.
Is there a core charge for my old BCM?
No, there is no core charge. We need your original module to perform the data cloning service, but you are welcome to have it shipped back to you with your new part if you wish.
What if my original 2015 Sierra BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still extract the necessary data. Please contact us before ordering if your module is severely damaged by water or fire, or if it has no communication whatsoever.