Restore Full Functionality to Your GM Vehicle
Are you chasing electrical gremlins in your GM truck or car? Intermittent power windows, a security light that won’t turn off, flickering dash lights, or even a no-start condition can often be traced back to a single component: the Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a failing BCM can cause widespread and frustrating issues. 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 cloning service for BCM part number 13594764 and its interchanges. Instead of sending you a blank module that requires a trip to the dealer, we transfer all the critical data from your original BCM to our replacement unit. This includes the VIN, key information, and specific options for your vehicle. The result is a true plug-and-play module, ready for installation right out of the box. Our expert GM BCM Programming service gets you back on the road quickly and without the hassle of dealership appointments.
A Technician’s Notebook: The 2015 Sierra That Had a Mind of Its Own
A customer brought in his 2015 Sierra 1500 with a laundry list of bizarre complaints. The horn would honk when he used the turn signal, the radio presets would vanish overnight, and sometimes the truck just wouldn’t start. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple U-codes (communication errors) pointing to the BCM. Instead of a costly replacement and re-flash at the dealer, we performed our cloning service. He sent us his old BCM, we transferred the data, and sent the programmed replacement back. He installed it in under 30 minutes in his driveway, and every single phantom electrical issue was gone. It’s a textbook case of how a failing BCM can wreak havoc, and how our service provides a simple, effective fix.
Common Signs of a Failing GM Body Control Module
If your vehicle is exhibiting any of these symptoms, a faulty BCM is the likely culprit. In my shop, I’ve seen these issues hundreds of times, often accompanied by communication diagnostic trouble codes (DTCs) like U0140, U0155, or B1001.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ The horn honks randomly or the alarm goes off without reason.
- ✔ Wipers, radio, or climate controls work intermittently or not at all.
- ✔ False warnings appearing on the driver information center (DIC).
- ✔ Rapid battery drain while the vehicle is off (parasitic draw).
Your Straightforward BCM Installation Guide
Our GM BCM Programming makes the physical swap simple. Once you receive your programmed module, follow these general steps. The BCM location varies, so consult a service manual for your specific model if needed (e.g., under the steering column, behind the dash, or in a kick panel).
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- Locate the BCM: Find the original Body Control Module in your vehicle. It will have several large electrical connectors attached.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it.
- Install the New Module: Mount the replacement BCM in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Re-attach the negative battery terminal and tighten it securely.
- Test Functionality: Start the vehicle and test all the functions that were previously malfunctioning (windows, locks, lights, etc.) to confirm the repair. Note the post-installation procedures below.
Important Post-Installation Information
While our cloning service handles the primary programming, some GM vehicles require a final handshake between modules after installation. This is normal and may require a high-end scan tool.
- Airbag System Sync: If the airbag light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed to sync the new BCM with the airbag system. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position relearn may be necessary to ensure correct brake light and traction control operation.
- No Core Charge: You do not need to return your original module to us. This service is provided with no core charge.
Verified Fitment for These GM Models
This service is guaranteed to work for BCMs with part numbers 13592137, 13506935, 13506936, 13587704, or 13594764 on the following 2015-2016 vehicles. Please match your part number to ensure compatibility.
- 2015 Cadillac ATS, CTS, Escalade, Escalade ESV, XTS
- 2016 Cadillac ATS, CTS
- 2015 Chevrolet Corvette, Silverado 1500/2500/3500, Suburban 1500, Tahoe
- 2015-2016 Chevrolet Impala (New Style)
- 2015-2018 Chevrolet Sonic
- 2015 GMC Sierra 1500/2500/3500, Sierra Denali 1500/2500/3500, Yukon, Yukon XL 1500
Frequently Asked Questions
How does the cloning service work?
After you purchase, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and flash it onto the replacement module. We then ship the plug-and-play replacement back to you, typically within one business day.
Why is this better than buying a used BCM from a junkyard?
A used BCM from another vehicle is locked to that vehicle’s VIN and options. It will not work in your car without being completely wiped and reprogrammed by a dealer, which is costly. Our service ensures the module you receive is a perfect match for your exact vehicle configuration.
Do I need any special tools for installation?
For the physical installation, you’ll only need basic hand tools like a socket set or screwdriver to access and remove the module. However, as noted, some vehicles may require a professional scan tool for post-install procedures like an airbag sync or brake pedal relearn if specific warning lights appear.
Is my original BCM returned to me?
No, we do not return the original faulty module as there is no core charge for this service. We use it solely to extract the necessary programming data.
What if my part number is slightly different?
This service covers part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. If your part number is not on this list, please contact us before ordering to ensure we can support your module.
Will this fix my ‘Service Theft Deterrent System’ message?
Yes, in most cases. The BCM is a critical part of the anti-theft system. By cloning your original key and security data, our programmed module will resolve these common security-related no-start issues.