Restore Your Truck’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your 2015 GMC Sierra 1500? Flickering lights, malfunctioning power windows, a security system that acts up, or even a frustrating no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, a faulty BCM can cause widespread and unpredictable problems. This isn’t just an annoyance—it can compromise your vehicle’s safety and reliability. We offer a simple, effective solution: a replacement BCM with a professional cloning service that eliminates the need for expensive dealership programming.
Our process is designed for both seasoned mechanics and DIY-savvy truck owners. You simply purchase this module, send us your original BCM, and we handle the rest. We will transfer all the critical vehicle-specific data—including VIN, mileage, and key information—from your old module to this replacement unit. The result is a true plug-and-play component. When you receive it back, you can install it directly into your truck, bypassing costly dealer visits and complex programming procedures. This is the most efficient way to get your 2015 Sierra 1500 Body Control Module working perfectly again.
A Technician’s Notebook: The Case of the Haunted Sierra
I had a 2015 Sierra 1500 roll into my bay last month with a list of complaints that sounded like something out of a ghost story. The dome lights would fade in and out while driving, the radio would randomly change stations, and the horn would blare when the owner used the turn signal. He’d already replaced the battery and checked all the grounds. After connecting my scan tool, I saw a dozen communication loss codes (U-codes) pointing to the BCM. Instead of putting him through the expense and wait time of a new module and dealer programming, we used a cloned BCM. Once the original data was transferred, the new module went in, and every single phantom issue disappeared instantly. It’s a testament to how a targeted, pre-programmed part can save hours of diagnostics and hundreds of dollars.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM could be the root cause. A failing module often won’t store a specific trouble code itself, but will cause communication errors with other modules (like U0140 – Lost Communication With Body Control Module).
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ The security system or alarm sounding for no reason.
- ✔ The engine cranks but refuses to start due to security system lock-out.
- ✔ Dash warning lights (like ABS or Airbag) illuminating without a clear cause.
- ✔ Horn, wipers, or other accessories activating on their own.
A Straightforward Guide to Installation
Installing your pre-programmed BCM is a manageable job for anyone with basic tools. On a 2015 Sierra 1500, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On your Sierra, it’s typically mounted to a bracket under the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the multiple wiring harness connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the Replacement: Mount your new, pre-programmed BCM in the same location. Securely plug in all the wiring connectors, making sure they click into place.
- Reconnect Power: Re-attach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, horn, etc.—to confirm the repair.
Important Post-Installation Notes
While our cloning service makes this a nearly plug-and-play process, some GM vehicles may require a final sync for certain safety systems. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure may be needed. This requires a professional-grade scan tool to sync the airbag module (SDM) with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light operation and traction control function. This is also performed with a scan tool.
- No Core Charge: You are not required to return your old module to us after the cloning service is complete. There is no core charge.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified automotive technician if you are unsure about any step.
Will This Fit My Vehicle?
This 2015 Sierra 1500 Body Control Module is a direct-fit replacement for part number 13592137 and is interchangeable with part numbers 13506935, 13506936, 13587704, and 13594764. It is confirmed to fit the following GM vehicles:
- Cadillac: ATS (2015-16), CTS (2015-16), Escalade / ESV (2015), XTS (2015)
- Chevrolet: Corvette (2015), Impala (2015-16), Silverado 1500/2500/3500 (2015), Sonic (2015-18), Suburban 1500 (2015), Tahoe (2015)
- GMC: Sierra 1500 / Denali 1500 (2015), Sierra 2500/3500 & Denali 2500/3500 (2015), Yukon / Yukon XL 1500 (2015)
Frequently Asked Questions
2015 Sierra 1500 Body Control Module
Is this a reliable fix for my vehicle?
Absolutely. This is a tested, OEM-quality . The cloning process ensures it functions exactly as your original did when it was new, restoring full functionality to your truck’s electronics.