Restore Your Vehicle’s Electrical System without the Dealership Hassle
Are you dealing with baffling electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a no-start condition can often be traced back to a single component: the Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a failing BCM can turn a reliable vehicle into a source of constant frustration. It’s the central hub for your car’s body electronics, and when it fails, chaos ensues.
Forget about towing your vehicle to a dealership and paying hundreds for programming and calibration. We offer a simple, effective solution. This is a replacement BCM that arrives at your door fully programmed and ready for installation. We use the data from your original BCM to configure this replacement unit, making it a true plug-and-play fix. This service preserves all your vehicle’s original settings, including key data and vehicle options, eliminating the need for expensive tools or software.
A Technician’s Notebook: The Case of the Haunted Sierra
A customer brought in a 2015 Sierra 1500 with a list of complaints that sounded like something from a ghost story. The radio would change stations on its own, the dome light would flicker while driving, and occasionally, the truck would refuse to start, showing a ‘Service Theft Deterrent System’ message. A quick scan revealed a flood of U-codes (communication errors) from various modules. Instead of chasing each code individually, my experience pointed straight to the network’s traffic controller: the BCM. We confirmed the internal failure, performed our cloning service onto a replacement module, and the truck was back to normal in an afternoon. This is a classic BCM failure scenario I’ve diagnosed and fixed over 100 times on this GM platform.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a faulty Body Control Module is a likely culprit. A failing module can often set communication trouble codes like U0140, U0155, or other U-series codes.
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (flickering, staying on, or not turning on).
- ✔ Horn, wipers, or radio functioning incorrectly or not at all.
- ✔ Security system faults or a persistent anti-theft light on the dash.
- ✔ A no-start condition where the engine cranks but won’t fire up.
- ✔ False warnings appearing on the driver information center.
A Straightforward Guide to Installation
Our cloning service makes this repair accessible for both DIY enthusiasts and professional mechanics. Since the programming is done, your job is simply to swap the hardware.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes before starting work.
- Locate Your BCM: The location varies by model. Common spots include under the steering column, behind the driver’s side dash panel, on the firewall, or even in the rear quarter panel (on models like the Sonic). Consult your owner’s manual or a reliable online resource for the exact location on your vehicle.
- Remove the Original: Carefully disconnect all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the Replacement: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Power Up: Reconnect the negative battery terminal.
- Test and Verify: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc. Start the vehicle to ensure it runs correctly.
- Final Checks: Be aware of potential post-install procedures. If your airbag light is on, an ‘Airbag System Sync’ may be required. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. These procedures require a professional-grade scan tool.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is guaranteed to fit the following models:
- Cadillac ATS: 2015-2016
- Cadillac CTS: 2015-2016 (Sedan)
- Cadillac Escalade / ESV: 2015
- Cadillac XTS: 2015
- 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
Always match your original part number to ensure compatibility. If you’re unsure, feel free to contact us.
Frequently Asked Questions
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique vehicle data and transfer it to the replacement module. We then ship the ready-to-install module back to you.
Do I need to send my keys with the BCM?
No. Because we are cloning all the data from your original module, including the security information, your existing keys will work seamlessly with the replacement BCM upon installation.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module after you receive the programmed replacement from us.
What if my airbag light comes on after installation?
This can occasionally happen. It requires a simple ‘Setup SDM Primary Key in BCM’ procedure using a professional diagnostic tool to sync the airbag system with the new BCM. Most independent repair shops can perform this service.
What tools do I need for the installation?
Basic hand tools are typically all that’s required, such as a socket set and a trim removal tool to access the BCM. No special programming tools are needed thanks to our cloning service.
How long does the entire process take?
Once we receive your original module, our service typically takes 1-2 business days. We will then ship the programmed module back to you. Shipping times will vary based on your location.