Tired of Unpredictable Electrical Problems in Your GM Truck?
As a technician with over two decades of experience under the hood, I’ve seen it all. One of the most frustrating issues for any vehicle owner is when the electronics start acting up. Your 2015 Silverado 3500 is a sophisticated machine, and its Body Control Module (BCM) is the central nervous system for everything from your power windows and door locks to your interior lights and security system. When it starts to fail, it can feel like your truck has a mind of its own.
You don’t have to put up with the flickering dash lights, a radio that cuts out, or a key fob that works one minute and not the next. More importantly, you don’t have to face a massive bill from the dealership for a new BCM and the hours of programming that come with it. We offer a straightforward, reliable solution: a replacement 2015 Silverado 3500 BCM that arrives at your door pre-programmed with your truck’s exact data.
How Our Simple Cloning Service Works
This isn’t just a part in a box; it’s a complete service. We take the guesswork and dealership hassle out of the equation. After you place your order, we’ll contact you with instructions to ship your original BCM to our facility. Once it arrives, our expert technicians will perform a full data transfer—cloning the Vehicle Identification Number (VIN), mileage, and all your specific vehicle options—to this replacement module. We then ship the ready-to-install BCM back to you. The result? A true plug-and-play fix that gets your truck back to 100% without any additional programming fees.
A Technician’s Notebook: The Case of the Finicky Sierra
A few months back, a 2015 GMC Sierra 2500 (a close cousin to your Silverado) rolled into my bay with a list of bizarre symptoms. The owner said the dome lights would randomly turn on while driving, the power locks were unresponsive, and he was getting a ‘Service 4WD’ message, even though the 4×4 system was mechanically sound. My initial scan showed a few communication codes, specifically a U0140 (Lost Communication With Body Control Module). Instead of just throwing parts at it, we monitored the BCM’s data stream. We saw erratic voltage outputs to the very circuits he was having problems with. It was clear the BCM’s internal logic was failing. We used a cloned BCM, and the installation took less than 30 minutes. All the ghost-like electrical issues vanished instantly. This is a classic BCM failure scenario that our service is designed to solve perfectly.
Is Your Truck Showing These Symptoms?
- âś” Intermittent or non-working power windows, door locks, or mirrors.
- âś” Interior or exterior lights that flicker, stay on, or don’t work at all.
- âś” The security system acting erratically or a ‘Service Theft Deterrent System’ message.
- âś” Key fob or remote start functions failing intermittently.
- âś” False warning messages on the driver information center (DIC).
- âś” Diagnostic Trouble Codes (DTCs) related to communication, such as U0140, U0155, or B1325.
Your Straightforward BCM Installation Guide
- âś” Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronic components.
- âś” Locate the BCM: On most 2015 GM trucks like the Silverado and Sierra, the BCM is located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- âś” Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Once disconnected, remove the bolts or clips holding the module in place.
- âś” Install the New Module: Mount your pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. Ensure each connector clicks firmly into place.
- ✔ Reconnect and Test: Reinstall any trim panels you removed, then reconnect the negative battery terminal. Start the truck and test all the functions controlled by the BCM—lights, locks, windows, radio, etc.—to confirm the repair.
Important Post-Installation Notes
While our cloning service makes this a nearly plug-and-play process, some GM vehicles may require a simple recalibration procedure after installation:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn is necessary to ensure correct brake light and traction control operation.
Disclaimer: Always consult a factory service manual or a qualified technician if you are unsure about any step. No core charge is required; you can keep your original module.
Guaranteed Fitment for Your GM Vehicle
This module, part number 13506936, is a direct replacement for several part numbers and fits a wide range of GM cars, trucks, and SUVs. Please verify your vehicle from the list below. Compatible Part Numbers: 13592137, 13506935, 13506936, 13587704, 13594764.
- ATS (2015-2016): Body Control (BCM); (on firewall)
- Corvette (2015): Body Control (BCM); (LH dash)
- CTS (2015-2016): Body Control (BCM); (LH dash)
- Escalade / Escalade ESV (2015): Body Control (BCM); (under steering column)
- Impala (2015-2016): Body Control (BCM); VIN 1 (New Style), (LH dash)
- Silverado 1500 / 2500 / 3500 (2015): Body Control (BCM); (under steering column)
- Sierra 1500 / 2500 / 3500 (2015): Body Control (BCM); (under steering column)
- Sierra Denali 1500 / 2500 / 3500 (2015): Body Control (BCM); (under steering column)
- Sonic (2015-2018): Body Control (BCM); (RH rear quarter panel)
- Suburban 1500 (2015): Body Control (BCM); (under steering column)
- Tahoe (2015): Body Control (BCM); (under steering column)
- XTS (2015): Body Control (BCM); (left front hinge pillar)
- Yukon / Yukon XL 1500 (2015): Body Control (BCM); (under steering column)
Frequently Asked Questions
How does the mail-in cloning process work?
After you complete your purchase, we will email you detailed instructions and a shipping address. You simply mail your original BCM to us. We clone the data to the replacement unit within 1-2 business days and ship it back to you, ready for installation.
Will I need to program keys or remotes after installation?
No. Because we clone your original module’s data, the replacement BCM will recognize your existing keys and key fobs automatically. This is a major benefit that saves you time and money.
Is this a guaranteed fix for my truck’s problems?
This part will fix any issue directly caused by a faulty BCM. It’s crucial to properly diagnose the problem first. The symptoms we’ve listed are strong indicators of BCM failure, but you should rule out issues with wiring, grounds, or individual components.
What if my original BCM is completely dead or not communicating?
In most cases, even if the BCM is failing, we can still extract the necessary data for cloning. If your module has severe physical damage (like from a fire or flood), please contact us before ordering to discuss options.
Do I need to send my core back?
No, there is no core charge for this item. You only need to send us your original BCM for the data cloning service. You can keep your old module after the service is complete.