End the Electrical Gremlins in Your GM Vehicle for Good
If you’re dealing with flickering lights, power windows with a mind of their own, a security system that won’t cooperate, or a frustrating no-start condition, the Body Control Module (BCM) is the likely culprit. As the central nervous system for your vehicle’s comfort and convenience features, a failing BCM can cause a cascade of baffling electrical issues. This isn’t just an annoyance; it can affect your vehicle’s security and daily usability. We offer a reliable, straightforward solution: a replacement BCM programmed specifically for your vehicle.
A Technician’s Notebook: The Silverado with a Ghost
I remember a 2015 Silverado 2500 that came into my shop last winter. The owner was at his wit’s end. The dome lights would flicker randomly, the radio would shut off, and sometimes the truck just wouldn’t crank. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I saw a handful of U-codes, most notably a U0140 – Lost Communication With Body Control Module. Instead of sending him to the dealer for a new module and a hefty programming bill, we used this exact cloning service. We shipped his original BCM out, got the programmed replacement back in a few days, and plugged it in. The truck fired right up, and every single electrical gremlin was gone. It’s the most efficient and cost-effective repair for these common BCM failures.
How Our Simple Cloning Service Works
Forget about expensive dealership visits and complex programming tools. Our service is designed to be as simple as possible. When you purchase this module, we will contact you with instructions to ship your original BCM to our facility. Once we receive it, our expert technicians will extract the unique data—which includes your vehicle’s VIN, security information, and specific options—and flash it onto this quality replacement module. We then ship the ready-to-install BCM back to you. It arrives at your door fully programmed and ready for a plug-and-play installation.
Is Your GM Vehicle Exhibiting These BCM Failure Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or keyless entry malfunctioning.
- ✔ The radio or infotainment system randomly turning off or acting strangely.
- ✔ A no-crank, no-start condition even with a good battery.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or other communication errors.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On most compatible trucks and SUVs like the 2015 Sierra Denali 3500, the BCM is located under the steering column, on the driver’s side of the dashboard. On other models (like the CTS or XTS), it may be in the LH dash, firewall, or hinge pillar. Consult a service manual if you’re unsure.
- ✔ Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed to be released. Do not force them.
- ✔ Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and remove it. Install your new, pre-programmed module in its place.
- ✔ Reconnect Everything: Plug all the electrical connectors firmly back into the new BCM. Reconnect the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all body functions—lights, windows, locks, wipers, and radio—to ensure everything is working correctly.
Important Post-Installation Notes
While our cloning service makes this a nearly seamless process, some vehicle systems may require a quick handshake with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated 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 may be required to ensure your brake lights and stability control systems function as intended.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle. No core charge is required; you can keep your original module.
Verified Fitment Across a Wide Range of GM Models
This BCM is a direct replacement for part numbers 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769. It fits a broad selection of vehicles, including:
- Cadillac: ATS (2014), CTS (2014), Escalade/ESV (2015), XTS (2014)
- Chevrolet: Caprice/SS Caprice (2014-17), Corvette (2014), Impala (2015-19), Silverado 1500 (2014), Silverado 2500/3500 (2015), Suburban 1500 (2015), Tahoe (2015)
- GMC: Sierra 1500 (2014), Sierra Denali 1500 (2014), Sierra 2500/3500 (2015), Sierra Denali 2500/3500 (2015), Yukon/Yukon XL 1500 (2015)
Please ensure your vehicle’s original BCM has a matching part number or ID for guaranteed compatibility.
Frequently Asked Questions
What exactly does a Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine-related functions. Think of it as the manager for power windows, locks, interior/exterior lighting, security system, wipers, and other comfort and convenience features.
Why is your cloning service better than just buying a new BCM?
A new BCM from the dealer is a blank slate. It requires expensive, specialized equipment to program it with your vehicle’s specific information. Our cloning service transfers all the data from your old module to the new one, so it arrives ready to install without any additional programming fees or dealer visits.
How long does the programming service take?
We typically program and ship the replacement module within 1-2 business days of receiving your original BCM. We will send you tracking information as soon as it’s on its way back to you.
Do I need special tools to install this BCM?
For most vehicles, you will only need basic hand tools like a socket set or screwdriver to access and swap the module. No programming tools are required. The most important part is being able to safely disconnect the battery and carefully handle the electrical connectors.
What if my airbag light comes on after installation?
This can happen occasionally as the new BCM needs to be formally introduced to the airbag system (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ function in a few minutes to resolve this and turn off the light.