Restore Your Truck’s Electrical System with a Hassle-Free Solution
If your 2015 Sierra Denali 3500 is acting possessed—with flickering lights, erratic power windows, or a security system that has a mind of its own—you’re likely dealing with a failing Body Control Module (BCM). As the central command for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. The dealership solution often involves towing your vehicle, paying steep diagnostic fees, and waiting for an expensive new module to be programmed. We offer a smarter, more direct path to getting your truck back in order.
This is a comprehensive cloning service for a replacement BCM, part number 13594692. The process is simple: you purchase this service, ship your original BCM to our facility, and we handle the rest. Our expert technicians will meticulously transfer all the essential vehicle-specific data—including VIN, mileage, and key information—from your old module to this fully tested replacement. The BCM you receive back will be a true plug-and-play component, ready for installation without any need for dealer intervention. This service is the most reliable way to fix your issues with a 2015 Sierra Denali 3500 BCM.
From the Diagnostic Bay: The Case of the Intermittent Sierra
A customer brought in his ’15 Sierra 2500 with a laundry list of bizarre symptoms that no one could pin down. The radio would randomly shut off, the dome light would stay on, and occasionally the turn signals wouldn’t work. He’d already replaced the battery and checked grounds. After connecting my scan tool, I saw multiple ‘Lost Communication’ codes (U-codes) with various modules. In my 20+ years of experience, this pattern almost always points to the BCM acting as a faulty network gateway. We performed our cloning service, and the customer installed the replacement BCM in his driveway in under 30 minutes. All the ghost-like electrical issues were gone instantly. It saved him a tow to the dealer and hundreds in programming fees.
Is Your Truck Showing These Symptoms?
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Instrument cluster warning lights (like ABS or Airbag) illuminating without a clear cause.
- ✔ Communication error codes, such as U0100, U0140, or other U-series DTCs.
- ✔ A no-start condition where the starter doesn’t engage, even with a good battery.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most compatible trucks like the Sierra and Silverado, the BCM is located under the steering column, on the driver’s side of the dashboard. On other models, it may be on the LH firewall or hinge pillar. A quick search for your specific model will confirm the location.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Seat your newly programmed BCM into the mounting bracket and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal. Your vehicle’s systems will now recognize the cloned BCM as the original.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some GM vehicles may require a simple relearn procedure for specific systems to sync correctly. This is normal. The most common are:
- Airbag System Sync: If the airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure brake lights and stability control function as intended.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Guaranteed Fitment for Your GM Vehicle
This BCM cloning service is compatible with units bearing part number 13594692 and is an interchangeable replacement for part numbers 13594768, 13593214, 13580690, 13591519, and 13594769. It fits a wide range of GM models, including:
- ATS (2014)
- CAPRICE / SS CAPRICE (2014-2017)
- CORVETTE (2014)
- CTS (2014 Sedan)
- ESCALADE / ESCALADE ESV (2015)
- IMPALA (2015-2019 New Style)
- SIERRA 1500 / DENALI 1500 (2014)
- SIERRA 2500 / 3500 / DENALI 2500 / DENALI 3500 (2015)
- SILVERADO 1500 (2014)
- SILVERADO 2500 / 3500 (2015)
- SUBURBAN 1500 (2015)
- TAHOE (2015)
- XTS (2014)
- YUKON / YUKON XL 1500 (2015)
Frequently Asked Questions
Frequently Asked Questions
How does the mail-in cloning service work?
After you place your order, we will provide you with shipping instructions. You send us your original BCM. We then transfer its data to the replacement module and ship it back to you, typically within 1-2 business days of receiving it.
Do I need to get this programmed by a dealer after I receive it?
No. The entire point of our service is to avoid dealer programming. The BCM you receive will be pre-programmed with your vehicle’s specific data, making it ready for installation right out of the box.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still extract the necessary data. Please contact us before ordering if your module is severely damaged by water or fire, or if it has no communication whatsoever.
Is there a core charge for my old BCM?
No, there is no core charge. We need your original module to perform the data transfer, but you are welcome to have it shipped back to you along with the programmed replacement.
Will this fix my specific problem?
This service resolves issues directly caused by a faulty BCM. While the symptoms listed are common indicators, proper vehicle diagnosis is essential. This part will not fix problems related to wiring, sensors, or other modules.