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 Sierra Denali 3500, and the story is always the same: the dome lights have a mind of their own, the power windows work intermittently, the radio presets are gone, or worse, the truck won’t start. You’ve checked the battery and the fuses, but the bizarre symptoms persist. The problem often lies deep within the vehicle’s electronic nervous system: the Body Control Module (BCM).
The BCM is the command center for your truck’s comfort and convenience features. When it fails, it can cause a cascade of frustrating and seemingly unrelated issues. Dealerships will quote you a fortune for a new module plus hours of labor for programming. We offer a smarter, more affordable solution. This replacement BCM, compatible with part number 13592137, comes with our expert cloning service. You send us your original module, we transfer all the vehicle-specific data to this replacement unit, and we ship it back to you, ready for a simple, plug-and-play installation. No dealership visit, no expensive scan tools, no hassle.
Is Your GM Vehicle Showing These BCM Failure Signs?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system acting up, causing random alarm triggers or no-start conditions.
- ✔ Inconsistent or dead gauges on the instrument cluster.
- ✔ Radio or infotainment system malfunctions.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ A/C and climate control functions not responding correctly.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2015 Silverado 2500 that came into my shop—the owner was at his wit’s end. The horn would blare randomly, and the turn signals had stopped working entirely, a major safety concern. He’d already replaced the battery and checked every fuse three times. After connecting my diagnostic scanner, I found a slew of communication codes pointing to a network failure. Instead of just replacing parts, I monitored the data stream from the BCM. It was dropping out intermittently. That’s the tell-tale sign. We performed this exact cloning service, installed the replacement 2015 Sierra Denali 3500 BCM (it’s the same family), and the truck was back to normal in an hour. It’s not just about fixing a part; it’s about restoring the vehicle’s safety and the owner’s peace of mind.
Your Straightforward BCM Installation 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 like the Sierra and Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column. On other models, it may be in the left front hinge pillar (XTS), on the firewall (ATS), or even the rear quarter panel (Sonic). Consult a service manual if you’re unsure.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. 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 the new, programmed BCM into the mounting bracket and plug in all the electrical connectors. Ensure they click securely into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, windows, locks, radio, etc.
Important Post-Installation Information
Our cloning service makes this process nearly seamless. However, in some vehicles, a couple of quick relearn procedures may be needed. This is standard for modern complex vehicles.
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- 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. No core charge is required; you can keep your original module.
Verified Fitment For a Wide Range of GM Models
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764, and fits the following models:
- ✔ 2015-2016 ATS
- ✔ 2015-2016 CTS
- ✔ 2015 Corvette
- ✔ 2015 Escalade & Escalade ESV
- ✔ 2015-2016 Impala (New Style)
- ✔ 2015 Silverado 1500/2500/3500
- ✔ 2015 Sierra 1500/2500/3500
- ✔ 2015 Sierra Denali 1500/2500/3500
- ✔ 2015-2018 Sonic
- ✔ 2015 Suburban 1500
- ✔ 2015 Tahoe
- ✔ 2015 XTS
- ✔ 2015 Yukon & Yukon XL 1500
Frequently Asked Questions
How does the cloning service work?
After you purchase, we will contact you with simple instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique data and transfer it to your new module. We then ship the plug-and-play replacement back to you, typically within 1-2 business days.
Why is cloning better than buying a new BCM from a dealer?
Cloning saves you significant money and time. A new BCM from a dealership requires expensive programming with their proprietary tools. Our service bypasses this need, making the installation something you can do yourself in your own garage.
What information is transferred during cloning?
We transfer all the critical information that makes your truck unique, including the Vehicle Identification Number (VIN), mileage, key fob data, and settings for the specific options your vehicle is equipped with.
Will this fix my specific problem?
This part is a solution for a faulty BCM. If your vehicle exhibits common symptoms like erratic lights, window/lock failures, or security issues, a failing BCM is the most likely cause. Proper diagnosis is always recommended.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary security information is stored within your original BCM and will be transferred to the replacement module.
What if the airbag light comes on after I install it?
This is uncommon but can happen. It simply means the new BCM needs to be electronically introduced to the airbag system. A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.