Restore Control Over Your Truck’s Electronics
If your 2014 Sierra 1500 is suddenly acting possessed—with flickering dash lights, windows that won’t cooperate, or a security system that randomly engages—the root cause is often a failing Body Control Module (BCM). As the central command for your truck’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect vehicle security and drivability. We offer a straightforward, reliable solution: a professionally programmed BCM that gets you back on the road without the exorbitant costs and complexities of dealership service.
This service provides a replacement BCM, part number 13594768 (and other compatible numbers), that is meticulously programmed using the data from your original module. This cloning process ensures that all your vehicle’s specific settings, key information, and security data are perfectly transferred. The result is a true plug-and-play component, eliminating the need for a trip to the dealer for expensive programming with a high-end scan tool. It’s the ideal fix for both savvy DIYers and professional shops looking for an efficient repair.
A Technician’s Notebook: The Case of the Haunted Sierra
A customer brought in his 2014 Sierra 1500, completely stumped. He’d already replaced the battery and alternator, but the truck would intermittently refuse to start, the radio would shut off, and the interior lights would pulse. A quick scan showed a slew of communication errors (U-codes), all pointing away from the charging system. In my experience, these ‘ghost’ problems are classic symptoms of a BCM failure. We confirmed the diagnosis and explained our mail-in programming service. He sent us his old BCM, we cloned it to a replacement unit, and he installed it himself over the weekend. The ‘haunting’ stopped immediately, saving him a tow to the dealer and hundreds in diagnostic and programming fees.
Is Your Truck Plagued by These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Flickering or inoperative interior and exterior lights.
- ✔ The security system light stays on, or the alarm goes off for no reason.
- ✔ The vehicle won’t start, and you see a “Service Theft Deterrent System” message.
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes, are present.
- ✔ The radio or infotainment system randomly turns on or off.
- ✔ The horn honks unexpectedly when turning or using other controls.
Your Straightforward BCM Installation Guide
Replacing your BCM is a manageable task. Here’s a general guide to get it done:
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On most 2014 Sierra 1500 models, the BCM is located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the multiple wiring harness 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 newly programmed BCM in the same location and securely reconnect all the wiring harnesses. You’ll hear a click as they lock into place.
- Final Steps: Re-install any trim panels you removed and reconnect the negative battery terminal. Start the vehicle to confirm that the electrical issues are resolved.
Important Post-Installation Information
While our programming service makes this a plug-and-play repair, some GM vehicles may require a simple relearn procedure after installation:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure correct brake light and traction control operation.
Disclaimer: Procedures can vary slightly by vehicle. Always consult a factory service manual or a qualified technician if you are unsure.
Will This Fit My Vehicle?
This BCM programming service is compatible with several part numbers, including 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769. It is a verified fit for the following vehicles, but always match your part number to be certain:
- 2014 Chevrolet Corvette
- 2014 Cadillac ATS, CTS, XTS
- 2014-2017 Chevrolet SS & Caprice
- 2014-2019 Chevrolet Impala (New Style)
- 2014 GMC Sierra 1500 / Sierra Denali 1500
- 2014 Chevrolet Silverado 1500
- 2015 Chevrolet Suburban 1500 & Tahoe
- 2015 Cadillac Escalade & Escalade ESV
- 2015 GMC Yukon & Yukon XL 1500
- 2015 GMC Sierra & Chevrolet Silverado 2500/3500 (confirm ID 13594692)
Frequently Asked Questions
What exactly is the mail-in programming service?
You purchase this service, and we provide instructions for you to ship your original BCM to us. We then extract the vehicle-specific data and transfer it to the replacement BCM. We ship the ready-to-install module back to you, typically within one business day of receiving yours.
Is this really plug-and-play?
Yes. Because we clone the data from your original module, the replacement BCM is pre-configured for your truck’s VIN, options, and key information. This lets you avoid a trip to the dealership for programming.
What if my original BCM is completely dead or missing?
If your original module is non-communicative or lost, we may still be able to help by programming a module with your VIN. Please contact us before ordering to discuss the specific situation and possibilities.
Do I need to return my old BCM after I receive the new one?
No, there is no core charge for this part. You can keep your original module. You only need to send it to us for the initial data transfer.
Will this fix my specific problem?
This BCM replacement solves issues directly caused by a faulty module. While the symptoms listed are very common for BCM failure, we always recommend a proper diagnosis by a qualified mechanic to rule out other issues like wiring or sensor faults.