Are you chasing down bizarre electrical gremlins in your Cadillac, Chevy, or GMC? One minute the power windows work, the next they don’t. The security light is flashing for no reason, or worse, your vehicle refuses to start intermittently. These frustrating and unpredictable issues often point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s electronics, a faulty BCM can wreak havoc. Dealerships will quote you a fortune for a new module plus mandatory programming fees. We offer a smarter, more affordable solution.
This is a comprehensive mail-in programming service. You simply send us your vehicle’s original BCM, and we transfer all the critical data—including your VIN, mileage, and specific options—to this fully tested replacement module. We then ship it back to you, ready for a true plug-and-play installation. No trips to the dealer, no surprise programming costs. This is the definitive fix for restoring your vehicle’s electronic stability and peace of mind.
Is Your GM Vehicle Showing These BCM Failure Signs?
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Erroneous warning lights on the dashboard (e.g., security, airbag, service messages).
- ✔ Problems with the key fob, remote start, or anti-theft system.
- ✔ Communication error codes, such as U0140 (Lost Communication With Body Control Module).
- ✔ Complete no-start condition where the starter doesn’t even engage.
A Technician’s Notebook: The Case of the Phantom Electrical Faults
A 2015 Sierra 1500 came into my bay with a list of complaints that seemed unrelated. The radio would switch off, the driver’s side window would stop working after 10 minutes of driving, and the dome lights would flicker. The owner had already replaced the battery and checked all the fuses. A scan showed a dozen intermittent communication codes across various modules. Instead of chasing each ghost, experience pointed me to the central hub: the BCM. After swapping in a programmed BCM like this one, every single issue vanished. It’s a classic example of how a single failing BCM can create widespread, confusing symptoms.
Solving Problems with a Programmed 2015 XTS BCM
A failing BCM isn’t just an annoyance; it can compromise your vehicle’s security and functionality. Our service for the 2015 XTS BCM and other compatible GM models is designed to be the most reliable and straightforward repair path. By cloning your original module, we ensure the replacement unit is an exact digital copy, preserving all the factory settings your vehicle left the assembly line with. This bypasses the complex and costly SPS (Service Programming System) procedures required at a dealership, saving you time and money.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: The location varies by model (see fitment list below). Common spots include under the steering column, behind the left-front hinge pillar (A-pillar), or on the firewall.
- ✔ Remove the Old Module: Carefully disconnect all electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your pre-programmed BCM in place and securely reconnect all electrical harnesses. Ensure each connector clicks into place.
- ✔ Reconnect the Battery: Reattach the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all body electronics: windows, locks, lights, radio, wipers, and key fobs to confirm the repair.
Post-Installation Checks
While our cloning service makes this a plug-and-play process, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following possibilities:
- 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: On some models, a brake pedal position sensor relearn might be necessary for proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or a qualified technician if you are unsure about any step.
Verified Fitment for These GM Models
This BCM programming service is compatible with modules bearing part numbers 13592137, 13506935, 13506936, 13587704, or 13594764. Please verify the part number on your original module before ordering. It is guaranteed to fit the following vehicles:
- 2015 Cadillac ATS: Body Control (BCM); (on firewall)
- 2016 Cadillac ATS: Body Control (BCM); (on firewall), ID 13587704
- 2015-2016 Cadillac CTS: Body Control (BCM); (LH dash)
- 2015 Cadillac Escalade & Escalade ESV: Body Control (BCM); (under steering column), w/model year break point (opt AVF)
- 2015 Cadillac XTS: Body Control (BCM); (left front hinge pillar)
- 2015 Chevrolet Corvette: Body Control (BCM); (LH dash)
- 2015-2016 Chevrolet Impala: Body Control (BCM); VIN 1 (4th digit, New Style), (LH dash), ID 13587704
- 2015 Chevrolet Silverado 1500/2500/3500: Body Control (BCM); (under steering column)
- 2015-2018 Chevrolet Sonic: Body Control (BCM); (RH rear quarter panel)
- 2015 Chevrolet Suburban 1500: Body Control (BCM); (under steering column), w/model year break point (opt AVF)
- 2015 Chevrolet Tahoe: Body Control (BCM); (under steering column), w/model year break point (opt AVF)
- 2015 GMC Sierra 1500 & Sierra Denali 1500: Body Control (BCM); (under steering column)
- 2015 GMC Sierra 2500/3500 & Denali 2500/3500: Body Control (BCM); (under steering column or LH firewall)
- 2015 GMC Yukon & Yukon XL 1500: Body Control (BCM); (under steering column), w/model year break point (opt AVF)
Frequently Asked Questions
How does the mail-in cloning service work?
After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will transfer all its data to the replacement unit and ship it back to you, typically within 1-2 business days.
Is this really plug-and-play?
Yes. Because we clone your original module’s data, the replacement BCM will be pre-configured for your vehicle’s specific VIN and options, eliminating the need for dealer programming.
Do I need to send my keys with the BCM?
No, you do not need to send your keys. All the necessary security information is contained within the BCM itself, which we will transfer during the cloning process.
What if my original BCM is completely dead or not communicating?
In many cases, we can still extract the necessary data even from a non-communicating module. If for some reason we cannot, we will contact you to discuss options and provide a full refund if needed.
Is there a core charge?
No, there is no core charge for this service. You are welcome to keep your original module after the service is complete.