If you’re dealing with bizarre electrical gremlins in your 2015 GMC Sierra or a similar GM vehicle, you’ve come to the right place. As a technician with over two decades of experience, I know how frustrating it is when your truck’s lights flicker, the power windows have a mind of their own, or worse, it refuses to start. Often, the culprit is a failing Body Control Module (BCM), the central hub for your vehicle’s body electronics. A trip to the dealership can mean hundreds in diagnostic fees, parts, and programming. Our service offers a smarter, more direct solution.
This isn’t just a part; it’s a complete, ready-to-install fix. We provide a fully tested replacement BCM that is professionally programmed with the data from your original module. This cloning process ensures a seamless, plug-and-play installation, retaining all your vehicle’s specific options, key information, and security settings without requiring a trip to the dealer for expensive calibration.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with a classic case of what he called ‘vehicle ghosts.’ The dome lights would stay on, the radio would randomly shut off, and he was getting a ‘Service StabiliTrak’ message. His previous mechanic wanted to start replacing the instrument cluster. I hooked up my scanner and saw a slew of U-codes, specifically U0140 (Lost Communication With Body Control Module). This pointed directly to the BCM. Instead of a costly new unit and programming, we performed this exact cloning service. The customer mailed in his old BCM, we transferred the data, and sent the new one back. He installed it in under 30 minutes, and every single issue was resolved. It’s a textbook example of how a targeted fix saves time, money, and headaches.
Is Your GM Vehicle Showing These BCM Failure Signs?
A failing BCM can cause a wide range of symptoms that seem unrelated. If you’re experiencing any of the following, this module is your likely solution:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system acting erratically or preventing the engine from starting.
- ✔ False warnings on the instrument cluster (e.g., ‘Service Airbag,’ ‘Service StabiliTrak’).
- ✔ Diagnostic trouble codes (DTCs) related to communication, such as U0140, U0155, or B1001.
- ✔ Inconsistent horn or wiper operation.
Your Straightforward Installation Guide
Our cloning service makes the physical swap simple for any DIY enthusiast or professional mechanic. While the BCM location varies slightly by model, the process is generally the same.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most 2015 Sierra and Silverado models, the BCM is located under the driver’s side of the dashboard, near the steering column. For other models, refer to the fitment list for its general location.
- Remove Connectors: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed to be released. Do not force them.
- Swap the Module: Unbolt or unclip the original BCM from its mounting bracket. Install your new, pre-programmed module in its place.
- Reconnect Everything: Plug the electrical connectors firmly into the new BCM until they click into place. Reconnect the negative battery terminal.
- Test Functionality: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair.
How Our Programming Service Works
To ensure a perfect match for your vehicle, this service requires you to send us your original BCM. After you place your order, we will contact you with detailed shipping instructions. Once we receive your module, our technicians will extract the unique vehicle data and transfer it to the replacement unit. We then ship the plug-and-play BCM back to you, typically within one business day. You keep your original module, and there is no core charge.
Post-Installation Notes
In some cases, minor follow-up procedures may be needed:
- 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 is only necessary if the light appears.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure proper brake light and stability control function.
Disclaimer: Vehicle systems vary. Always have a factory service manual available for your specific model or consult with a qualified professional if you are unsure about any step.
Verified Fitment for These GM Models
This 2015 Sierra Body Control Module is a direct fit for units with part numbers 13592137, 13506935, 13506936, 13587704, or 13594764. It is compatible with the following vehicles and options:
- ATS: 2015-2016 (on firewall)
- Corvette: 2015 (LH dash)
- CTS: 2015-2016 (Sdn, LH dash)
- Escalade / Escalade ESV: 2015 (under steering column, opt AVF)
- Impala: 2015-2016 (New Style, LH dash, ID 13587704)
- Sierra 1500 / Denali 1500: 2015 (under steering column)
- Sierra 2500 / 3500 / Denali: 2015 (under steering column or LH firewall, ID 13587704)
- Silverado 1500 / 2500 / 3500: 2015 (under steering column)
- Sonic: 2015-2018 (RH rear quarter panel)
- Suburban 1500: 2015 (under steering column, opt AVF)
- Tahoe: 2015 (under steering column, opt AVF)
- XTS: 2015 (left front hinge pillar)
- Yukon / Yukon XL 1500: 2015 (under steering column, opt AVF)
Frequently Asked Questions
How does the mail-in programming service work?
After you purchase, we’ll email you a prepaid shipping label and instructions. You simply box up your original BCM and send it to us. We’ll clone the data to the new unit and ship it back to you, ready to install.
Will this fix my exact problem?
This module corrects issues directly caused by a faulty BCM, such as the electrical problems listed above. If you have confirmed the BCM is the source of the fault through diagnostic codes (like U0140) or symptom analysis, this is the solution.
Is this truly plug-and-play?
Yes. Because we clone your vehicle’s original data, including the VIN and security information, the replacement module works immediately upon installation without any additional programming from a dealer.
Do I need to send my keys?
No, there is no need to send your keys. All the necessary security data is stored within your original BCM and will be transferred during the cloning process.
What is the turnaround time?
We typically program and ship your replacement module the same business day we receive your original BCM, minimizing your vehicle’s downtime.