Fix Your Truck’s Electrical Gremlins for Good
Is your GM truck or SUV acting possessed? One minute the radio works, the next it doesn’t. Maybe the power windows have a mind of their own, the security light is flashing, or worse—you’re facing an intermittent no-start condition that leaves you stranded. These frustrating and unpredictable issues often point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and convenience features, when the BCM goes bad, it can cause chaos. This isn’t just an annoyance; it can affect vehicle security and safety systems.
Forget the expensive dealership visit, the towing fees, and the costly programming charges. We offer a simple, reliable solution: a replacement BCM, part number 13594769, that arrives at your door fully programmed with your vehicle’s original data. Our expert cloning service means this module is truly plug-and-play. We transfer the critical information from your original BCM to this replacement unit, ensuring seamless integration with your truck’s existing systems. This is the straightforward fix you’ve been looking for to restore your vehicle’s functionality and your peace of mind.
From the Diagnostic Bay: The Case of the Possessed Pickup
A customer brought in a 2015 Silverado 2500—same platform as the Sierra—with a laundry list of bizarre complaints. The horn would blare when he used the turn signal, the interior lights would flicker randomly, and sometimes the truck just wouldn’t start. He’d already replaced the battery and checked the main grounds. After hooking up my scan tool, I saw a storm of U-codes (U0140, U0155), indicating a loss of communication with the BCM. Instead of just ordering a new module from the dealer, which would have required towing the truck and a multi-day wait, we used this exact cloning service. We pulled his old BCM, sent it out, and had the programmed replacement back in a couple of days. The install took less than an hour, and every single electrical issue was resolved instantly. No programming, no extra fees—just a working truck.
Is Your GM Vehicle Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely cause:
- ✔ Power windows, locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The anti-theft or security light is on, causing a no-start condition.
- ✔ The horn is blaring randomly or not working when you press it.
- ✔ Key fobs are no longer recognized by the vehicle.
- ✔ Multiple communication error codes (U-codes) stored in the system.
- ✔ Wipers activating on their own or not responding to the switch.
How Our Simple Programming Service Works
Getting your truck fixed is easier than you think. Our process is designed to be hassle-free and eliminate the need for any special computer programming on your end.
- Place Your Order: Purchase this BCM, ensuring your contact information is accurate.
- We’ll Contact You: Our team will reach out with simple instructions and a shipping address.
- Ship Us Your BCM: Carefully remove and send us your original Body Control Module.
- We Clone It: Upon arrival, our technicians will professionally transfer all necessary data from your old module to the replacement unit.
- We Ship It Back: We’ll ship your ready-to-install BCM back to you, typically within one business day, and provide you with tracking information.
This service ensures that your vehicle’s specific configuration, including VIN and option content, is perfectly matched. Plus, there is no core charge, so you can keep your original module.
A Straightforward Guide to BCM Installation
Installing your newly programmed 2015 Sierra 3500 BCM is a manageable job for a DIYer with basic tools. The BCM is typically located under the steering column on the driver’s side.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most GM trucks and SUVs of this era, you’ll find the BCM mounted to the firewall or under the dash, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and unplug them from the old BCM. There are usually several large multi-pin connectors.
- Remove the Old Module: Unbolt or unclip the old BCM from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your pre-programmed replacement BCM in the same location and reconnect all the electrical connectors, ensuring they click securely into place.
- Reconnect Battery & Test: Reinstall any panels you removed, reconnect the negative battery terminal, and start the vehicle. Test all functions like lights, locks, windows, and wipers to confirm the repair.
Important Post-Installation Information
In some cases, minor follow-up procedures may be needed:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is required 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 traction control operation.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility List
This Body Control Module is a direct replacement for part numbers 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769. It is guaranteed to fit the following vehicles:
- ATS 2014
- CAPRICE 2014-2017
- CORVETTE 2014
- CTS 2014 (Sdn, VIN A)
- ESCALADE & ESCALADE ESV 2015
- IMPALA 2015-2016 (VIN 1), 2017-2019
- SIERRA 1500 PICKUP 2014
- SIERRA 2500 & 3500 PICKUP 2015 (ID 13594692)
- SIERRA DENALI 1500 2014
- SIERRA DENALI 2500 & 3500 2015 (ID 13594692)
- SILVERADO 1500 PICKUP 2014
- SILVERADO 2500 & 3500 PICKUP 2015 (ID 13594692)
- SS CAPRICE 2014-2017
- SUBURBAN 1500 2015
- TAHOE 2015
- XTS 2014
- YUKON & YUKON XL 1500 2015
Frequently Asked Questions
Why do I need to send you my original BCM?
Your original BCM contains the unique Vehicle Identification Number (VIN) and specific software for your truck’s options (like keyless entry, lighting packages, etc.). By cloning this data, we ensure the replacement module is a 100% plug-and-play match, avoiding any need for expensive dealer programming.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, it’s very manageable. The BCM is usually accessible under the driver’s side dash. The main challenge is reaching it, but the replacement itself only involves unplugging connectors and removing a few bolts. See our installation guide above for the general steps.
How long does the cloning service take?
Once we receive your original module, our technicians typically complete the programming and ship your new BCM back out within one business day. We know you need your truck back, so we prioritize a fast turnaround.
What happens if I install it and the airbag light comes on?
This is uncommon but can happen. It means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this fix my ‘Service Theft Deterrent System’ message?
Yes, in most cases. The BCM is a critical part of the vehicle’s anti-theft system. When it fails, it can trigger this warning and prevent the engine from starting. A properly cloned BCM will restore this function.