Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
If you’re dealing with baffling electrical issues in your 2015 Cadillac XTS—like flickering lights, malfunctioning power windows and locks, or a car that refuses to start—a failing Body Control Module (BCM) is often the culprit. As the central nervous system for your vehicle’s electronics, a faulty BCM can cause widespread, intermittent chaos. Replacing it isn’t a simple swap; a new module from the dealership requires expensive and complex programming to sync with your car’s VIN and security systems. Our service eliminates that entire headache.
We provide a professionally programmed 2015 XTS BCM that is a direct, plug-and-play replacement. By cloning the data from your original module, we deliver a unit that is ready for installation right out of the box. This saves you hundreds of dollars in dealership fees and eliminates the need for specialized diagnostic tools. Simply send us your original BCM, and we’ll handle the complex data transfer, sending you back a fully functional module matched specifically to your vehicle.
A Technician’s Notebook: The Phantom Drain
I had a 2015 Cadillac XTS in my bay that was a real head-scratcher. The owner complained of a dead battery every two or three days. He’d already replaced the battery and alternator, but the problem persisted. A parasitic draw test showed something was staying awake after the car was shut off. After hours of diagnostics, we traced it to the BCM. It was failing to send the ‘sleep’ command to the other modules on the network, causing a slow but steady drain. A cloned 2015 XTS BCM from a service like this one solved the issue instantly, without needing a costly trip to the dealer for programming.
Signs Your Cadillac’s BCM is Failing
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution:
- ✔ Unpredictable power door lock or window operation.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system alarm sounding randomly or the car not recognizing your key fob.
- ✔ Instrument cluster gauges behaving erratically or going dark.
- ✔ A no-start condition where the engine cranks but won’t fire, often accompanied by a security light.
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes, stored in other modules.
Your Straightforward Installation & Service Guide
Our process is designed to be simple and get you back on the road quickly. Here’s how it works:
- Step 1: Place Your Order. Purchase this BCM programming service. We will then contact you with detailed instructions and the shipping address to send your original module to us. Please ensure your contact information is correct.
- Step 2: Remove Your Original BCM. In the 2015 XTS, the BCM is typically located at the left front hinge pillar. First, disconnect the negative battery terminal to prevent any electrical shorts. Carefully unplug the wiring harnesses and remove the module.
- Step 3: Ship Us Your Module. Securely package your original BCM and ship it to the address we provide. We recommend using a tracked shipping service.
- Step 4: We Program Your Replacement. Once we receive your module, our technicians will transfer all necessary data—including VIN, mileage, and key information—to the replacement unit. This process typically takes 1-2 business days.
- Step 5: Install the Cloned BCM. We ship the plug-and-play BCM back to you. Simply install it, reconnect the wiring harnesses, and connect your battery. Your vehicle should start and function correctly without any additional programming.
Important Post-Installation Checks
In some cases, minor relearn procedures may be needed after installation. This is normal for modern vehicles. Be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be necessary.
Disclaimer: Procedures can vary. Always consult a factory service manual or a qualified technician for specific guidance.
Verified Vehicle Compatibility
This module is a direct fit for a wide range of GM vehicles and is compatible with part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. Please confirm your vehicle is on this list:
- Cadillac ATS: 2015, 2016
- Cadillac CTS: 2015, 2016
- Cadillac Escalade / ESV: 2015
- Cadillac XTS: 2015 (at left front hinge pillar)
- Chevrolet Corvette: 2015
- Chevrolet Impala: 2015-2016 (New Style)
- Chevrolet Silverado 1500/2500/3500: 2015
- Chevrolet Sonic: 2015-2018
- Chevrolet Suburban 1500: 2015
- Chevrolet Tahoe: 2015
- GMC Sierra 1500/2500/3500 & Denali Models: 2015
- GMC Yukon / Yukon XL 1500: 2015
Frequently Asked Questions
How does the mail-in programming service work?
After you purchase, we provide you with an address to ship your original BCM. We then extract the vehicle-specific data and flash it onto the replacement module. We ship the new, plug-and-play module back to you, ready for installation.
Do I need to program this BCM after I receive it?
No. Because we clone the data from your original unit, this BCM is 100% plug-and-play. It will work immediately upon installation without any need for a trip to the dealership or a specialized scan tool for programming.
What if my original BCM is completely dead or water damaged?
In many cases, even with significant damage, we can still recover the necessary data. Please contact us before ordering if your module is severely damaged so we can discuss the likelihood of a successful data transfer.
How long does the entire process take?
Once we receive your original module, our programming service typically takes 1-2 business days. The total time will depend on shipping speeds to and from our facility. We always ship the completed module back with tracking.
Is there a core charge for this part?
No, there is no core charge. We only need your original module for the data transfer service. You can keep your old part once the service is complete.
Will this fix my specific problem?
This module will correct issues directly caused by a faulty BCM. While the symptoms listed are common, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause of your vehicle’s problems before ordering.