Is Your Sierra Plagued by Baffling Electrical Problems?
As a technician with over two decades of experience, I’ve seen it all. Your 2014 Sierra Denali 1500 starts acting possessed: the radio turns on and off by itself, the power windows have a mind of their own, or you’re getting a cluster of warning lights that make no sense. Often, the root cause isn’t a dozen different failed sensors—it’s the central nervous system of your truck’s electronics: the Body Control Module (BCM). When the BCM fails, it creates a cascade of frustrating, hard-to-diagnose issues. A trip to the dealer means a new, expensive module and several hours of programming fees. We offer a better, more direct solution.
This is a comprehensive cloning service for your vehicle’s BCM. You simply send us your original module, and we transfer all of its critical data—including VIN, mileage, and security information—to this fully tested replacement unit. The result? A module that is truly plug-and-play, ready to install right out of the box, saving you hundreds in dealership programming costs. This process ensures a seamless and correct fix for the complex electronics in your GM vehicle.
A Technician’s Notebook: The Intermittent Gremlin
I once had a 2014 Silverado (which uses the same BCM) in my bay that was driving the owner crazy. The turn signals would work one minute and not the next. The interior lights would flicker, and occasionally the truck wouldn’t start, showing a ‘Service Theft Deterrent System’ message. We checked grounds, wiring, and fuses for days. Finally, we pulled the BCM. After connecting it to the bench, we found a microscopic crack in a solder joint on the main board, causing intermittent communication loss. A cloned BCM solved all the issues instantly. These failures are rarely obvious, but the symptoms are unmistakable to a trained eye.
Common Signs of a Failing GM BCM
If your truck is experiencing these issues, a faulty BCM is the most likely culprit. A failing module can often set communication codes like U0140, U0155, or other U-series DTCs.
- ✔ 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 preventing the vehicle from starting.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Inaccurate gauge readings or a dashboard that lights up with multiple, unrelated warnings.
- ✔ Radio or infotainment system malfunctions.
Your Straightforward Installation Guide
Installing your newly programmed 2014 Sierra Denali 1500 BCM is a manageable job for a confident DIYer. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most GM trucks like the Sierra and Silverado, 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.
- Disconnect and Remove: Carefully unplug the multiple wiring harnesses connected to the module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the Replacement: Mount the new, programmed BCM in the same location and securely reconnect all the wiring harnesses. Ensure each connector clicks into place.
- Reconnect Power: Reattach the negative battery terminal.
- Post-Install Checks: Start the vehicle and test all body functions—lights, windows, locks, radio, etc. Please see the important notes below regarding potential post-installation procedures.
Important Notes After Installation
While our cloning service makes this a near plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal.
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool and syncs the airbag system with the BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
Disclaimer: Vehicle systems vary. Always have a factory service manual for your specific model on hand or consult a qualified professional if you are unsure about any step.
Will This Fit My Vehicle?
This BCM is a direct replacement for several part numbers and fits a wide range of General Motors vehicles. Please verify your original part number is on this list or that your vehicle is listed below. This service is specifically for the 2014 Sierra Denali 1500 BCM and other compatible models.
Interchangeable Part Numbers: 13594692, 13594768, 13593214, 13580690, 13591519, 13594769
- ATS (2014)
- CAPRICE / SS CAPRICE (2014-2017)
- CORVETTE (2014)
- CTS (2014) – Sedan, VIN A
- ESCALADE / ESV (2015)
- IMPALA (2015-2019)
- SIERRA 1500 / DENALI 1500 (2014)
- SIERRA 2500 / 3500 / DENALI (2015) – ID 13594692
- SILVERADO 1500 (2014)
- SILVERADO 2500 / 3500 (2015) – ID 13594692
- SUBURBAN 1500 (2015)
- TAHOE (2015)
- XTS (2014)
- YUKON / YUKON XL 1500 (2015)
Frequently Asked Questions
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique programming and transfer it to the replacement module. We then ship the ready-to-install BCM back to you.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary security information is stored within the BCM itself, which we will transfer over. Your existing keys will work seamlessly with the cloned module.
How long does the service take?
Our programming service is typically completed within 1-2 business days after we receive your original module. We then ship it back to you promptly, and tracking information will be provided.
Is this better than buying a used BCM?
Absolutely. A standard used BCM from a junkyard is locked to the donor vehicle’s VIN and options. It would still require expensive and complex dealership programming to work in your truck. Our service eliminates that entire process, providing a part that’s matched to your specific vehicle.
What if my original BCM is completely dead or ‘fried’?
In most cases, even if the BCM is non-functional in the vehicle, we can still recover the necessary data from the memory chip. If you suspect severe damage (e.g., from water or fire), please contact us first to discuss the situation.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after sending it in for data transfer.