Restore Your Truck’s Electrical System with a Hassle-Free Solution
Are you chasing down electrical gremlins in your 2015 Sierra 1500? Flickering lights, malfunctioning power windows, a security system that acts up, or dashboard warning lights that have a mind of their own are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. It can make a perfectly good truck feel unreliable and difficult to operate.
Forget the expensive trip to the dealership and the hassle of programming a new module from scratch. We offer a simple, reliable, and cost-effective solution. This is a replacement BCM that comes fully programmed by cloning the data from your original unit. This means your vehicle’s specific key codes, VIN, and optional features are transferred directly, making the installation process as close to plug-and-play as possible.
From the Diagnostic Bay: The Case of the Haunted Sierra
I remember a 2015 Sierra that came into my shop with a laundry list of bizarre symptoms. The owner said his interior lights would pulse randomly, the radio would shut off, and sometimes the remote key fob wouldn’t work. He’d already replaced the battery and checked the main grounds. We scanned it and found a slew of U-codes (communication errors) pointing to intermittent network failures. After ruling out wiring issues, we zeroed in on the BCM. These modules are notorious for internal circuit board failures that cause exactly this kind of chaos. By providing a pre-programmed replacement, we had him back on the road the same day he got the part, with all issues resolved—no expensive diagnostic rabbit holes or dealer programming needed.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ Erroneous warning lights on the instrument cluster (e.g., security, airbag).
- ✔ Remote keyless entry (RKE) system failing to respond.
- ✔ Vehicle’s anti-theft system preventing the engine from starting.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or other U-series codes.
How Our Simple Cloning Service Works
Our goal is to make this repair as easy as possible for you. After you complete your purchase, we will contact you with clear, step-by-step instructions for shipping your original BCM to our facility. Please ensure your contact information is correct at checkout. Once we receive your module, our expert technicians will meticulously transfer all critical data to this replacement unit. We then ship the programmed module back to you, typically within one business day. You’ll receive tracking information so you know exactly when to expect it.
Your Straightforward BCM Installation Guide
Once you receive your programmed module, installation is straightforward. While the exact location can vary slightly, the BCM in a 2015 Sierra 1500 is typically located under the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most GM trucks and SUVs from this era, it’s found under the driver’s side of the dashboard, often attached to a bracket near the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be pressed or lifted. Once disconnected, unbolt or unclip the module from its mounting location.
- Install the New Module: Seat the new, programmed BCM in the same location and secure it. Reconnect all electrical connectors firmly until they click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Post-Install Checks: Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Important Post-Installation Notes
In some cases, additional minor procedures may be required to sync all vehicle systems. This is normal and depends on your vehicle’s specific configuration.
- Airbag System Sync: If the airbag warning light is illuminated 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 module.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be necessary.
Disclaimer: We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the process.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 13587704 and is also compatible with part numbers 13592137, 13506935, 13506936, and 13594764. It is confirmed to fit the following vehicles:
- ATS: 2015-2016
- Corvette: 2015
- CTS: 2015-2016
- Escalade / Escalade ESV: 2015
- Impala: 2015-2016 (New Style)
- Sierra 1500 / 2500 / 3500 & Denali Models: 2015
- Silverado 1500 / 2500 / 3500: 2015
- Sonic: 2015-2018
- Suburban 1500: 2015
- Tahoe: 2015
- XTS: 2015
- Yukon / Yukon XL 1500: 2015
Frequently Asked Questions
How does the mail-in programming service work?
After you place your order, we’ll email you a prepaid shipping label and instructions. You simply package your original BCM and send it to us. We’ll clone the data onto the replacement module and ship it back to you, ready to install.
Why is this better than buying a used BCM from a junkyard?
A used BCM from another vehicle is programmed with that vehicle’s VIN and options. It will not work correctly in your truck without being reprogrammed by a dealer, which adds significant cost and hassle. Our service eliminates that step entirely.
Will I need any special tools for installation?
No. Basic hand tools are all that’s required to physically swap the module. Our programming service ensures you won’t need any expensive diagnostic scan tools for the initial setup, though some minor relearn procedures may be necessary as noted.
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 necessary data for cloning. If for some reason we cannot, we will contact you to discuss options, including a full refund.
How long does the entire process take?
Once we receive your original module, we typically program and ship the replacement unit within one business day. Total turnaround time will depend on shipping speeds to and from our facility.
Is there a core charge or do I need to return my old part?
There is absolutely no core charge. We only need your original module for the data transfer service. You can keep your original module after the service is complete.