Tired of Chasing Electrical Gremlins in Your GM Truck?
As a technician with over two decades of experience, I’ve seen it all. A customer comes in with a 2015 GMC Sierra 2500, and the complaint list is a mile long: the dome light has a mind of its own, the power windows work intermittently, the radio won’t turn off with the key out, and a “Service Theft Deterrent System” message keeps popping up. These aren’t separate problems; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central hub for your truck’s body electronics, and when it starts to fail, it can cause a cascade of frustrating, seemingly unrelated issues.
Instead of facing a costly trip to the dealership for a new module and expensive programming fees, we offer a straightforward, reliable solution. This is a replacement BCM, part number 13594692, that comes ready for installation through our professional cloning service. You simply send us your original BCM, and we transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. The result? A module that is truly plug-and-play, restoring full functionality without the need for a dealer’s scan tool.
Case Study: The Water-Damaged Sierra
A few months back, a 2015 Sierra 2500 was towed to my shop. The owner said it wouldn’t start and the dash was lighting up like a Christmas tree. A quick scan revealed a slew of U-codes, indicating a massive communication failure on the CAN bus. After checking the basics, I pulled the BCM from under the driver’s side dash. Sure enough, the tell-tale green and white corrosion from water intrusion was all over the connector. The original module was too damaged to communicate. This is where our data recovery and cloning service shines. We were able to extract the essential data from the damaged board’s memory chip and transfer it to a replacement BCM, saving the customer hundreds over a new module and the associated dealer programming.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your BCM is the most likely culprit for your 2015 Sierra 2500 BCM issues:
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security or anti-theft system acting up, preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers turning on by themselves or not responding to the switch.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Radio or infotainment system staying on after the key is removed.
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast. The key is taking your time and being organized. Our cloning service eliminates the hardest part—the programming.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work. Wait a few minutes for the system capacitors to discharge.
- Locate the BCM: On most GM trucks and SUVs like the Sierra, the BCM is located under the driver’s side of the dashboard, often near the steering column or attached to the firewall. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the module. These connectors have locking tabs that must be depressed to be released. Never pull on the wires themselves. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the Replacement: Mount your newly programmed BCM in the exact same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Test Functionality: Start the vehicle and test all the systems that were previously malfunctioning—lights, locks, windows, radio, etc.—to confirm the repair was successful.
Important Post-Installation Notes
Our cloning process makes this as close to plug-and-play as possible. However, in some GM vehicles, a couple of simple relearn procedures may be needed:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a scan tool procedure called “Setup SDM Primary Key in BCM” is required to sync the systems. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and traction control function.
Disclaimer: Always consult a factory service manual for your specific vehicle for detailed instructions and torque specs.
Will This Fit My Vehicle?
This BCM is a direct-fit, programmed solution for a wide range of GM vehicles. Please verify your original part number matches 13594692 or one of the interchangeable numbers: 13594768, 13593214, 13580690, 13591519, or 13594769. It is confirmed to fit the following models:
- ATS (2014)
- Caprice / SS Caprice (2014-2017)
- Corvette (2014)
- CTS (2014 Sedan)
- Escalade / Escalade ESV (2015)
- Impala (2015-2019)
- Silverado 1500 (2014)
- Silverado 2500 / 3500 (2015)
- Sierra 1500 / Denali 1500 (2014)
- Sierra 2500 / Denali 2500 (2015)
- Sierra 3500 / Denali 3500 (2015)
- Suburban 1500 (2015)
- Tahoe (2015)
- XTS (2014)
- Yukon / Yukon XL 1500 (2015)
Frequently Asked Questions
Why do you need my original BCM?
Your original BCM contains unique data essential for your truck’s operation, including the VIN, security information for the keys, and settings for your specific options. By cloning this data to the replacement module, we ensure it works perfectly with your vehicle without requiring any additional programming.
Is this service really plug-and-play?
Yes, in over 95% of cases. The module we send back to you will be ready to install and function immediately. In rare instances, as noted above, a simple relearn procedure for the airbag or brake pedal sensor may be required, which can be done with a bi-directional scan tool.
What if my original module is completely dead or water damaged?
Even if your module is non-communicative, we can often perform a direct-from-chip data recovery. Our technicians are skilled at extracting the necessary files directly from the memory IC on the circuit board. Please contact us before ordering if your module has severe physical or water damage.
How long does the programming service take?
We pride ourselves on a fast turnaround. Once we receive your original module, our cloning service is typically completed and your new module is shipped back out within 1-2 business days. We will provide you with a return tracking number as soon as it ships.
Do I have to pay a core charge?
No. There is no core charge or need to return the replacement module. The price you pay is for the replacement BCM and the programming service. You can keep your original, non-working module.