Fix Your Truck’s Electrical Gremlins for Good
If you’re dealing with bizarre electrical issues in your 2015 Sierra Denali 2500—like power windows with a mind of their own, flickering dash lights, or accessories that work intermittently—you’re likely facing a failing Body Control Module (BCM). As the central nervous system for your truck’s comfort and convenience features, a faulty BCM can turn your reliable workhorse into a source of daily frustration. The dealership solution involves expensive diagnostics, a costly new module, and programming fees that can quickly add up. We offer a smarter, more direct solution.
This is a replacement Body Control Module that comes pre-programmed with your vehicle’s specific data. How does it work? It’s simple: after your purchase, you’ll ship your original BCM to us. Our expert technicians will transfer all the critical information—including VIN, mileage, and security keys—to this replacement unit. We then ship the ready-to-install module back to you. This cloning service makes the repair truly plug-and-play, eliminating the need for a trip to the dealer and the use of a specialized scan tool for programming. It’s the most efficient way to restore full functionality to your vehicle.
From the Diagnostic Bay: The Case of the Ghostly Gremlins
A customer brought in his ’15 Silverado 2500 with a list of complaints that sounded like the truck was haunted. The radio would shut off, the dome light wouldn’t work, and sometimes the power locks would cycle on their own. He’d already replaced the battery, thinking it was a simple voltage issue. After connecting my scan tool, I saw a dozen ‘U’ codes—communication errors—all pointing back to the BCM. Instead of a new module and a full system reprogram, we used our cloning service. He sent us his old BCM, we cloned it, and he had the new one back in a few days. He installed it in his driveway in under an hour, and every single issue was resolved. This is the kind of straightforward, effective repair we specialize in.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution:
- ✔ Erratic power window or power lock operation
- ✔ Interior or exterior lights not working correctly or staying on
- ✔ Horn sounding randomly or not at all
- ✔ Remote keyless entry failure
- ✔ Warning lights on the dashboard, such as for the security or airbag system
- ✔ Communication DTCs (Diagnostic Trouble Codes) like U0140, U0155, or other U-series codes
- ✔ A no-start condition where the starter doesn’t engage
A Straightforward Guide to Installation
Our cloning service makes installing your replacement 2015 Sierra 2500 BCM a simple process that most DIYers can handle. The BCM is typically located under the steering column on the driver’s side.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On most 2015 GM trucks, you’ll find the BCM mounted under the driver’s side dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the replacement BCM in the same location and securely plug in all the electrical connectors. You’ll hear a ‘click’ when they are properly seated.
- Reconnect and Test: Reconnect the negative battery terminal. Start your truck and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Important Post-Installation Note: In some cases, additional steps may be required. If your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary. Always refer to a service manual for model-specific instructions.
Verified Vehicle Compatibility
This Body Control Module is a direct fit for a wide range of 2015-2018 GM vehicles. Please match your part number (13587704) or one of the interchangeable numbers (13592137, 13506935, 13506936, 13594764) to ensure compatibility. This part fits:
- ATS (2015-2016)
- Corvette (2015)
- CTS (2015-2016)
- Escalade & Escalade ESV (2015)
- Impala (2015-2016)
- Sierra 1500 / Denali 1500 (2015)
- Sierra 2500 / Denali 2500 (2015)
- Sierra 3500 / Denali 3500 (2015)
- Silverado 1500 (2015)
- Silverado 2500 (2015)
- Silverado 3500 (2015)
- Sonic (2015-2018)
- Suburban 1500 (2015)
- Tahoe (2015)
- XTS (2015)
- Yukon & Yukon XL 1500 (2015)
This is a hassle-free repair. There is no core charge, so you can keep your original module. Order today and restore your vehicle’s electronic systems with confidence.
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will provide you with instructions to ship your original BCM to our facility. Our technicians will then extract the unique data from your module and flash it onto the replacement unit. We then ship the plug-and-play replacement BCM back to you.
Will I need to program this BCM at the dealership?
No. Our cloning service makes this module 100% plug-and-play. All the necessary programming is done by us before we ship it to you, saving you hundreds in dealer fees.
What is the turnaround time?
We typically program and ship your replacement module the same business day we receive your original BCM. We’ll send you a tracking number as soon as it’s on its way back to you.
Is this a guaranteed fix for my 2015 Sierra 2500 BCM problems?
If your vehicle’s symptoms match those of a failed BCM and the module has been properly diagnosed as the fault, this service provides a reliable and permanent solution. It restores the original factory functionality.
What if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the BCM and the airbag system (SDM) need to be re-synced. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Most repair shops can perform this service.
Do I need to send my old BCM back as a core?
You only need to send your original BCM to us for the data cloning service. There is no additional core charge, and you are welcome to keep your original, non-working module after the service is complete.