Restore Full Functionality to Your Truck with a Plug-and-Play BCM
If you’re dealing with bizarre and frustrating electrical issues in your 2015 Silverado 3500, a failing Body Control Module (BCM) is often the culprit. As the central nervous system for your truck’s body electronics, a faulty BCM can cause a cascade of problems, from flickering lights and malfunctioning power windows to a no-start condition that leaves you stranded. This isn’t just an annoyance; it’s a reliability issue that can compromise your truck’s safety and utility. Our professionally programmed BCM replacement service is the most straightforward and cost-effective solution to get your vehicle back to 100%.
We take the guesswork and high dealership costs out of the equation. This is a cloning service: you simply send us your original BCM, and we transfer all its critical data—including VIN, mileage, and key information—to this replacement unit. The result is a true plug-and-play module. Once you receive it back, you can install it without the need for an expensive trip to the dealer for programming. It’s the ideal fix for both seasoned mechanics and capable DIYers looking to save time and money.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2015 Sierra Denali (which uses a similar BCM) that came into the shop with the most erratic symptoms I’d seen in a while. The owner said his interior lights would stay on, the radio would randomly shut off, and sometimes the truck wouldn’t recognize the key fob. He’d been to two other shops that couldn’t find the issue because it was so intermittent. After checking the main power and ground circuits, we hooked up the scan tool and saw a slew of U-series communication codes. This pointed directly to a network problem, and at the center of that network is the BCM. We pulled the original module, cloned it to one of our tested units, and sent the customer on his way. He called back a week later, thrilled that all the “ghosts” were gone. This is a classic case where a failing 2015 Silverado 3500 BCM was the single point of failure for multiple systems.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light is on, or the alarm randomly triggers.
- ✔ The vehicle won’t start, but the battery and starter are good (anti-theft system engaged).
- ✔ Key fobs are no longer recognized by the vehicle.
- ✔ Multiple warning lights on the dashboard with no clear cause.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or B1001.
Your Straightforward Guide to Installation
Installing your newly programmed BCM is a simple process. For the 2015 Silverado 3500, the BCM is typically located under the steering column. While specific steps can vary, here is a general guide:
- 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 of this era, you’ll find the BCM mounted to a bracket under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect Connectors: Carefully release the locking tabs on the multiple wiring harness connectors and unplug them from the old BCM. They are color-coded and keyed, so you can’t mix them up.
- Swap the Modules: Unbolt or unclip the original BCM from its mounting bracket and set it aside. Mount your new, pre-programmed BCM in its place.
- Reconnect Everything: Plug all the wiring connectors firmly back into the new BCM until they click into place. Reinstall any dash panels you removed.
- Power Up: Reconnect the negative battery terminal. Your truck’s essential data is already loaded, and it should start and run with its original settings restored.
Important Post-Installation Notes
While our programming handles the critical data, some vehicle systems may require a relearn procedure after the BCM is replaced. This is normal. You may need a professional scan tool to perform an Airbag System Sync (‘Setup SDM Primary Key in BCM’) if the airbag light is on, or a Brake Pedal Position Relearn for proper brake light and traction control function. Always consult a factory service manual for your specific vehicle’s requirements.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for several GM vehicles and is compatible with part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. Please verify your part number before ordering. This module fits the following models:
- ✔ 2015 Chevrolet Corvette
- ✔ 2015-2016 Chevrolet Impala (New Style)
- ✔ 2015-2018 Chevrolet Sonic
- ✔ 2015 Chevrolet Silverado 1500, 2500, 3500
- ✔ 2015 Chevrolet Suburban 1500 & Tahoe
- ✔ 2015 GMC Sierra 1500, 2500, 3500 (including Denali)
- ✔ 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
How does the cloning service work?
After you purchase, we will provide instructions for shipping your original BCM to us. Our technicians will then extract the unique data from your module and flash it onto the replacement unit. We then ship the programmed module back to you, ready for installation.
Do I need to get this 2015 Silverado 3500 BCM programmed by a dealer?
No. Because we clone the data from your original module, this replacement BCM is a true plug-and-play solution. This service saves you from needing expensive dealer-specific tools for programming.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM has failed, we can still retrieve the necessary data. If your module is severely damaged (e.g., by fire or water), please contact us before purchasing to discuss options.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after you’ve installed the replacement.
How long does the programming service take?
We typically program and ship your replacement BCM within 1-2 business days of receiving your original module. You will receive tracking information as soon as it ships.