End the Electrical Gremlins in Your GM Truck or Car
Are you chasing down bizarre electrical issues in your 2015 Silverado 3500? One minute the power windows work, the next they don’t. Maybe your dash lights are flickering, the radio is acting possessed, or you’re getting a random ‘Service Theft Deterrent System’ message. As a technician with over two decades of experience, I’ve seen these exact symptoms hundreds of time. The culprit is almost always a failing Body Control Module (BCM), the central computer for your vehicle’s comfort and convenience features.
A failing BCM can make your reliable truck feel unpredictable. Instead of spending a fortune at the dealership for a new module and paying for hours of programming, we offer a simple, permanent solution. This is a fully tested, replacement BCM that comes pre-programmed with your truck’s exact data. We transfer all the critical information from your original module—including the VIN and vehicle-specific options—directly onto this replacement unit. The result is a true plug-and-play fix that restores function without the dealership hassle.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 2500 with a complaint that stumped two other shops: the interior dome lights wouldn’t turn off, draining the battery overnight. They had already replaced the battery and all the door jamb switches. Scans showed a dozen intermittent U-codes (communication errors), but nothing consistent. Experience pointed me to the BCM. After swapping in a known-good module, the problem vanished. The original BCM had an internal short on the lighting circuit. This cloning service provides the exact fix we performed, saving you the diagnostic headache and getting you a reliable part from the start.
Is Your Silverado Showing These BCM Failure Signs?
- ✔ Erratic or non-functional power windows, locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security light is on, or you see a ‘Service Theft Deterrent System’ message.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) like U0140, U0155, or other communication faults.
- ✔ Wipers activating on their own or not responding to the switch.
How Our Simple Programming Service Works
This isn’t just a part; it’s a complete service designed for you. After you place your order, we’ll contact you with simple, clear instructions to ship your original BCM to our facility. Once we receive it, our expert technicians will perform a full data transfer to the replacement module. We then ship the programmed module back to you, typically within one business day. You get a part that’s ready for installation right out of the box, with no need for additional programming.
Your Straightforward BCM Installation Guide
Installing your programmed 2015 Silverado 3500 BCM is a manageable job for a DIYer with basic tools. The BCM is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- Locate the BCM: On most Silverado/Sierra models, you’ll need to remove the lower dash panel beneath the steering wheel to access the module. It’s a black box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be pressed or lifted. Once disconnected, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount the replacement BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test all body functions: lights, windows, locks, wipers, and radio.
Important Post-Installation Steps
In some cases, your vehicle may require a couple of simple relearn procedures after the new 2015 Silverado 3500 BCM is installed:
- Airbag System Sync: If the airbag warning light is illuminated after installation, it means the BCM and the Sensing and Diagnostic Module (SDM) need to be re-synced. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is only necessary if the light is on.
- Brake Pedal Position Relearn: Some models may require the brake pedal position sensor to be recalibrated to ensure proper brake light operation and traction control functionality. This can often be done with a high-end diagnostic tool.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Fitment For Your GM Vehicle
This BCM programming service is compatible with modules bearing part numbers 13594692, 13594768, 13593214, 13580690, 13591519, or 13594769. It fits a wide range of GM vehicles, including:
- 2015 Chevrolet Silverado 2500/3500 Pickup
- 2015 GMC Sierra 2500/3500 Pickup & Denali
- 2014 Chevrolet Silverado 1500 Pickup
- 2014 GMC Sierra 1500 Pickup & Denali
- 2015 Chevrolet Suburban 1500 & Tahoe
- 2015 GMC Yukon & Yukon XL 1500
- 2015 Cadillac Escalade & Escalade ESV
- 2014-2017 Chevrolet SS & Caprice
- 2014-2016 Cadillac CTS, ATS, XTS
- 2015-2019 Chevrolet Impala (New Style)
Please match your part number or contact us with your VIN to confirm compatibility before ordering.
Frequently Asked Questions
Do I need to do any programming myself?
No. This is a complete programming service. We handle all the data transfer. When you receive the module, it is ready to be installed without any need for special scan tools or dealer intervention.
Is this a plug-and-play solution?
Yes, for over 95% of vehicles. We clone your original data, making it plug-and-play. In rare cases, as noted above, an airbag sync or brake pedal relearn might be needed, which requires a diagnostic tool.
How long does the cloning service take?
Once we receive your original BCM, our technicians typically complete the programming and ship your replacement module back out within 24-48 business hours. We’ll send you tracking information as soon as it’s on its way.
What information is transferred from my old BCM?
We transfer all the essential data, including your vehicle’s VIN, immobilizer/security information, and coding for options like keyless entry, lighting configurations, and other features specific to your truck.
Do I need to send my keys with the module?
No, you do not need to send your keys. Because we are cloning the data from your original module, your existing keys will be recognized by the replacement BCM automatically.
Is there a core charge?
No, there is no core charge. You can keep your original module after sending it to us for the data transfer.