Restore Full Functionality to Your Vehicle with a True Plug-and-Play Solution
Are you chasing down bizarre electrical gremlins in your 2015-2016 Cadillac CTS or another GM vehicle? Intermittent power windows, flickering lights, a security system that acts up, or confusing messages on your dash are classic signs of a failing Body Control Module (BCM). As the central nervous system for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. In my 20+ years in the bay, I’ve seen how a bad BCM can make a perfectly good car feel unreliable. This isn’t just an inconvenience; it can affect safety systems and your peace of mind.
Forget the expensive dealership visit and the hassle of finding a shop with the right equipment to program a new module. We offer a streamlined, reliable solution. This listing is for a replacement BCM, professionally programmed with the data from your vehicle’s original module. This cloning process ensures that all your vehicle’s specific options and security information are perfectly mirrored, making installation a true plug-and-play affair. This 2015-2016 CTS BCM replacement service is the most efficient way to get your car back to 100%.
From the Diagnostic Bay: The Ghost in the Machine
A customer brought in a 2015 Sierra 1500 with a truly baffling problem. The radio would randomly shut off, the dome light would flicker while driving, and occasionally the power locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. A generic scan tool showed no hard codes, just a few intermittent communication errors (U-codes). This is a textbook BCM failure scenario. The internal logic of the module was failing, sending erratic commands throughout the vehicle. Instead of a multi-day diagnostic and programming session at the dealer, we used this exact cloning service. We had his original BCM cloned, sent it back, and he installed the replacement in under 30 minutes. The ‘ghost’ was gone, and all systems returned to normal. This service saved him hundreds of dollars and significant downtime.
Common Signs of a Failing GM Body Control Module
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. This 2015-2016 CTS BCM replacement is the definitive fix for these issues:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Horn sounding randomly or not working when pressed.
- ✔ Dash warning lights (like the airbag or brake light) illuminating without a clear cause.
- ✔ Communication error codes, often in the U-series (e.g., U0140, U0155), indicating loss of communication with the BCM.
- ✔ The vehicle failing to start due to security system immobilization.
Your Simple Mail-In Programming & Installation Guide
Our process is designed to be straightforward for both DIY enthusiasts and professional technicians. Here’s how it works:
- Step 1: Place your order. We will contact you with clear, step-by-step instructions and a shipping address. Please ensure your contact information is accurate during checkout.
- Step 2: Carefully remove the original BCM from your vehicle. The location varies by model (see fitment list), but it’s often under the dash or behind a kick panel.
- Step 3: Ship your original BCM to us. Once we receive it, our technicians will expertly transfer all critical data to the replacement module.
- Step 4: We ship your new, ready-to-install BCM back to you, typically within 1-2 business days, and provide you with tracking information.
- Step 5: Install the programmed BCM. Since it’s cloned, there’s no need for dealer-level programming. Reconnect your battery and start your vehicle.
Important Post-Installation Information
In some cases, minor relearn procedures may be needed after installation. This is normal and depends on your specific vehicle’s configuration.
- Airbag System Sync: If the airbag warning light is on after you install the module, a simple ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the airbag system with the new BCM and can be done with a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure the brake lights and traction control system function properly.
- No Core Charge: You can keep your original module. There are no core fees or returns necessary.
Disclaimer: Always consult a factory service manual or a qualified professional for vehicle-specific procedures.
Will This Fit My GM Vehicle?
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is confirmed to fit the following models. Please verify your part number or consult the list below:
- Cadillac ATS: 2015, 2016
- Cadillac CTS: 2015, 2016 (Sdn, LH dash)
- Cadillac Escalade / ESV: 2015
- Cadillac XTS: 2015
- Chevrolet Corvette: 2015
- Chevrolet Impala: 2015-2016 (New Style, VIN 1)
- Chevrolet Silverado 1500 / 2500 / 3500: 2015
- Chevrolet Sonic: 2015-2018
- Chevrolet Suburban 1500: 2015
- Chevrolet Tahoe: 2015
- GMC Sierra 1500 / 2500 / 3500: 2015
- GMC Sierra Denali 1500 / 2500 / 3500: 2015
- GMC Yukon / Yukon XL 1500: 2015
Ordering this 2015-2016 CTS BCM replacement is your first step toward a permanent, reliable repair.
Frequently Asked Questions
How does this programming service work?
You purchase this listing, send us your vehicle’s original BCM, and we clone the essential programming and security data onto a replacement BCM. We then ship the ready-to-install module back to you.
Is this really a plug-and-play solution?
Yes. Because we clone the data from your original module, the replacement BCM will be recognized by your vehicle’s other computers, avoiding the need for expensive dealer programming.
Do I need to send my original BCM to you?
Yes, sending us your original module is required. This is the only way we can extract the vehicle-specific data to make the replacement unit work seamlessly with your car.
What happens if my airbag light is on after installation?
This can occasionally happen. It simply means the airbag system needs to be re-synced to the new BCM using a ‘Setup SDM Primary Key’ procedure, which can be performed with a professional scan tool.
How long does the entire process take?
Once we receive your module, the programming and shipping turnaround is typically 1-2 business days. The total time will depend on your shipping speed to and from our facility.
Is there a core charge for my old part?
No, there is no core charge. After you receive your programmed replacement, you can keep your original module.