Restore Your Truck’s Brain, Not Your Bank Account
If your 2015 Sierra 2500 is acting possessed—with flickering lights, unresponsive power windows, or random warning messages—you’re not alone. As a technician with over two decades of experience, I’ve seen these exact electrical gremlins countless times. The culprit is almost always a failing Body Control Module (BCM), the central computer for your truck’s comfort and convenience features. A trip to the dealership means a hefty bill for a new module plus hours of programming labor. Our service offers a smarter, more affordable solution: a fully programmed BCM, ready for installation right out of the box.
This isn’t just a part; it’s a complete, hassle-free fix. We take the data from your original BCM and transfer it directly to this replacement unit. This cloning process ensures that all your truck’s specific options and security information are perfectly matched. The result? You get a reliable module that works seamlessly with your vehicle, bypassing the need for expensive dealer-specific tools and programming. This is the definitive repair for a faulty 2015 Sierra 2500 BCM.
From the Diagnostic Bay
I remember a 2015 Silverado 2500 (which uses the same BCM) that came into my shop with the strangest symptoms. The radio would turn on by itself, the driver’s side window wouldn’t go down, and the dome light would stay on, draining the battery overnight. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a dozen communication codes, all pointing back to one component. By isolating the BCM on the data network, we confirmed it was internally shorted. Instead of a $1000+ dealer repair, we used a cloned module like this one. The customer was back on the road the next day with all issues resolved for a fraction of the cost.
Is Your Truck Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system acting erratically or preventing the engine from starting.
- ✔ False warning lights on the dashboard (e.g., “Service StabiliTrak”).
- ✔ Diagnostic Trouble Codes (DTCs) like U0140, U0155, or other ‘U’ (communication) codes related to the BCM.
- ✔ A/C and heater controls not responding correctly.
A Straightforward Guide to Installation
Installing your pre-programmed BCM is a simple process that most DIYers can handle with basic tools. Here’s a general guide for your 2015 Sierra 2500 BCM:
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronic components.
- Locate the BCM: On most 2015 Sierra/Silverado trucks, the BCM is located on the LH (driver’s side) firewall or under the steering column area. It’s a black plastic box with several large electrical connectors.
- Remove Connectors: Carefully press the release tabs on each wiring harness connector and pull them straight out from the module. They are often color-coded, but it’s wise to take a photo first.
- Unbolt the Old BCM: Remove the bolts or nuts holding the BCM bracket in place. Slide the old module out.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and secure it. Reconnect all wiring harnesses, ensuring each one clicks firmly into place.
- Reconnect Battery & Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair.
Post-Installation Note: In some cases, you may need to perform a post-installation procedure like an Airbag System Sync or Brake Pedal Position Relearn. This is typically only necessary if a specific warning light appears after installation. Always consult a factory service manual for detailed instructions specific to your vehicle.
Verified Vehicle Compatibility
This Body Control Module is a direct fit for a wide range of GM vehicles. Please verify your part number against this list. This module is compatible with part numbers: 13592137, 13506935, 13506936, 13587704, and 13594764.
- ✔ 2015 Chevrolet Corvette
- ✔ 2015-2016 Chevrolet Impala (New Style)
- ✔ 2015-2018 Chevrolet Sonic
- ✔ 2015 Chevrolet Silverado 1500/2500/3500
- ✔ 2015 Chevrolet Suburban 1500 / Tahoe
- ✔ 2015 GMC Sierra 1500/2500/3500 & Denali Models
- ✔ 2015 GMC Yukon / Yukon XL 1500
- ✔ 2015 Cadillac Escalade / Escalade ESV
- ✔ 2015-2016 Cadillac ATS
- ✔ 2015-2016 Cadillac CTS (Sedan)
- ✔ 2015 Cadillac XTS
Important Post-Installation Procedures
Important Post-Installation Procedures
While our cloning service makes this a near plug-and-play repair, some vehicle systems may require recalibration after the BCM is replaced. This is normal and ensures all safety systems function correctly.
Frequently Asked Questions
Important Post-Installation Procedures
While our cloning service makes this a near plug-and-play repair, some vehicle systems may require recalibration after the BCM is replaced. This is normal and ensures all safety systems function correctly.