Is Your GM Truck Experiencing Strange Electrical Problems?
The Body Control Module (BCM) is the central command center for your vehicle’s body electronics. It manages everything from your power windows and door locks to the interior lights, security system, and even the horn. When the BCM starts to fail, it can create a cascade of confusing and frustrating issues that seem unrelated. One moment your wipers might not work, and the next, your truck may not start due to a security system fault. If you’re dealing with these kinds of electrical gremlins in your 2015 GMC Sierra 3500 or another compatible GM vehicle, a faulty BCM is the most likely culprit.
We had a 2015 Sierra 2500 in the shop that was driving the owner crazy. The dome lights would flicker, the radio would stay on after the key was removed, and sometimes the truck would refuse to crank, displaying a ‘Service Theft Deterrent System’ message. The owner had already replaced the battery and checked all the fuses. After connecting our scan tool, we saw a dozen communication error codes (U-codes) all pointing back to one source. The BCM was failing intermittently, corrupting the data network. Instead of a costly trip to the dealer for a new module and programming, we provided a cloned BCM. The installation took less than an hour, and every single electrical issue was resolved instantly. It was a night-and-day difference.
Solving Issues with a Programmed 2015 Sierra 3500 BCM
Don’t let a faulty BCM sideline your truck. A dealership replacement involves purchasing a new module, paying for labor, and then spending hundreds on programming fees. Our service simplifies this entire process. We provide a replacement BCM that is programmed by cloning the data from your original unit. This means the replacement module is a perfect digital match for your truck, retaining all its specific options, key information, and security settings. The result is a true plug-and-play solution that gets you back on the road without the dealership hassle.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) malfunctioning.
- ✔ The horn sounding randomly or failing to work when pressed.
- ✔ Issues with the anti-theft system, including no-start conditions.
- ✔ Windshield wipers behaving unpredictably (not turning on/off, stopping mid-swipe).
- ✔ Dashboard warning lights appearing for no reason.
- ✔ Complete loss of communication with the scan tool.
Our Simple Programming Service
Our process is designed to be straightforward and efficient:
- Place Your Order: Complete your purchase through our secure checkout.
- Ship Your Original BCM: We will contact you with clear, simple instructions for shipping your original BCM to our facility. Please ensure your contact information is accurate.
- We Handle the Rest: Once we receive your module, our technicians will extract the necessary data and program the replacement BCM. We then ship the ready-to-install module back to you, typically within 1-2 business days, and provide you with tracking information.
Important Post-Installation Information
While our goal is a seamless installation, some vehicle systems may require a recalibration after the BCM is replaced. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control function.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Guaranteed Fitment for Part Number 13594692
This BCM is a direct replacement for part number 13594692 and is also compatible with the following alternate part numbers: 13594768, 13593214, 13580690, 13591519, 13594769. It is confirmed to fit the following vehicles:
- 2014-2017 Chevrolet SS & Caprice
- 2014-2019 Chevrolet Impala
- 2014 Chevrolet Corvette
- 2014 Cadillac ATS, CTS, XTS
- 2014-2015 GMC Sierra 1500 / Denali 1500
- 2015 GMC Sierra 2500 / 3500 / Denali 2500 & 3500 (with ID 13594692)
- 2014-2015 Chevrolet Silverado 1500
- 2015 Chevrolet Silverado 2500 / 3500 (with ID 13594692)
- 2015 Chevrolet Suburban 1500 & Tahoe
- 2015 Cadillac Escalade & Escalade ESV
- 2015 GMC Yukon & Yukon XL 1500
Frequently Asked Questions
What exactly is a BCM cloning service?
We transfer the critical vehicle-specific data—like VIN, mileage, key information, and equipment options—from your original BCM to a replacement unit. This makes the new module a perfect digital copy, allowing it to work in your truck without needing expensive dealer programming.
Why do I have to send you my original part?
Your original BCM holds the unique data that your truck needs to function correctly. By sending it to us, you ensure we can create an exact clone, guaranteeing a simple plug-and-play installation when you receive the replacement.
Is this part difficult to install?
The BCM is typically located under the steering column or on the driver’s side firewall. Installation is usually straightforward, involving disconnecting the battery, removing a few trim panels, and swapping the electrical connectors. Most DIY mechanics with basic tools can complete the job in under an hour.
What if the airbag light comes on after I install it?
This is a known possibility. The BCM and the airbag module (SDM) communicate for security. If the light appears, a simple ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool will sync the modules and turn the light off.
Will this fix all of my truck’s electrical problems?
If your issues match the common symptoms of BCM failure, this service has a very high success rate. However, it will not fix problems related to other faulty components, such as bad wiring, faulty sensors, or other failing modules. Proper diagnosis is key.