Restore Full Functionality to Your Truck’s Electronics
If you’re dealing with bizarre and frustrating electrical problems in your 2015 Sierra 1500, you’re not alone. Flickering interior lights, unresponsive power windows, a security system that acts up, or dashboard warnings that come and go are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your truck’s comfort and convenience features, and when it malfunctions, it can make your reliable truck feel unpredictable. This isn’t just an annoyance; it can affect everything from your power locks to your interior lighting.
Forget the expensive trip to the dealership and the lengthy downtime. We offer a simple, cost-effective solution: a professionally programmed replacement BCM. Our service is designed to get you back on the road with minimal hassle. We transfer the unique data from your original BCM directly onto this replacement unit, making it a true plug-and-play fix. No dealer programming, no additional calibration fees—just a straightforward installation.
A Technician’s Notebook: The Case of the Ghostly Gauges
I had a 2015 Sierra 1500 in my bay last month with a list of symptoms that drove the owner crazy. The radio would randomly shut off, the dome lights would flicker while driving, and occasionally, the truck wouldn’t start, showing a ‘Service Theft Deterrent System’ message. A scan showed a handful of U-codes, specifically U0140 (Lost Communication With Body Control Module). After verifying the power and grounds to the BCM were solid, it was clear the module itself was failing internally. Instead of a costly new module and programming from the dealer, we used this exact cloning service. The customer shipped us his old BCM, we cloned it, and he had the programmed replacement back in a few days. He installed it himself in under an hour, and every single electrical gremlin was gone. It’s a reliable fix that saves hundreds of dollars.
Is Your Sierra Exhibiting These Symptoms?
A failing BCM can cause a wide range of issues. If your truck is experiencing any of the following, a faulty BCM is the likely culprit:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Flickering or inoperative interior and exterior lights.
- ✔ Erratic behavior from the radio or infotainment system.
- ✔ False warnings on the dashboard, like ‘Service Theft Deterrent System’.
- ✔ Key fob not working correctly or at all.
- ✔ Communication error codes, such as U0140, U0155, or other network faults.
- ✔ A no-start condition where the engine cranks but won’t fire due to security system issues.
Your Straightforward BCM Installation Guide
Installing your programmed BCM is a manageable job for a DIYer. On the 2015 Sierra, 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 truck’s battery and wait 10-15 minutes before starting work. This prevents electrical shorts and protects the vehicle’s sensitive electronic systems.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access. The BCM is a black box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all 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: Mount your new, pre-programmed BCM in the same location. Reconnect all the electrical connectors, ensuring they click securely into place.
- Final Steps: Reinstall the lower dash panel and reconnect the negative battery terminal. Your truck is now ready to start.
Important Post-Installation Information
Our programming service makes this a plug-and-play installation, but some GM vehicles may require a simple relearn procedure for specific systems after the battery has been disconnected or a new module is installed.
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This is not a fault with the BCM but a security handshake that needs to be reset. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration might be necessary to ensure proper brake light and traction control operation. This can also be performed with a compatible diagnostic tool.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Compatibility for Your GM Vehicle
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is guaranteed to fit the following models and years:
- ATS: 2015, 2016
- Corvette: 2015
- CTS: 2015, 2016
- Escalade & Escalade ESV: 2015
- Impala: 2015-2016 (New Style)
- Sierra 1500 / Denali 1500: 2015
- Sierra 2500 & 3500 / Denali 2500 & 3500: 2015
- Silverado 1500, 2500, 3500: 2015
- Sonic: 2015-2018
- Suburban 1500: 2015
- Tahoe: 2015
- XTS: 2015
- Yukon & Yukon XL 1500: 2015
Frequently Asked Questions
How does the programming service work?
It’s simple. After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and transfer it to the replacement BCM. We then ship the ready-to-install module back to you.
Will I need a technician to program this 2015 Sierra 1500 BCM?
No. Our cloning service makes this a true plug-and-play part. All the necessary software and key information from your old module is transferred over, eliminating the need for expensive dealer programming.
How long does the entire process take?
We program and ship your replacement BCM within 1-2 business days of receiving your original module. The total time depends on shipping transit times to and from our facility.
Is there a core charge?
No, there is no core charge for this item. You are welcome to keep your original module after our programming service is complete.
What if my airbag light is on after I install it?
This can happen on some GM vehicles. It requires a ‘Setup SDM Primary Key’ procedure with a professional scan tool to sync the airbag system with the new BCM. This is a standard relearn procedure, not a defect.