Is Your GM Vehicle Plagued by Electrical Gremlins?
As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant frustration. If your 2012 Buick Verano or other compatible GM model is experiencing bizarre electrical issues—from flickering lights to a security system that has a mind of its own—the BCM is often the culprit. This module is the central nervous system for your car’s body electronics, and when it fails, chaos ensues. This isn’t just an inconvenience; it can affect vehicle safety and security.
We offer a straightforward and reliable solution. This listing is for a replacement BCM, part number 13580696, that comes fully programmed using your vehicle’s original data. By cloning the information from your factory module, we deliver a unit that is truly plug-and-play, eliminating the need for expensive dealership visits and complex programming tools. You get a seamless repair that restores full functionality to your vehicle.
A Technician’s Notebook: The Case of the Confused LaCrosse
A few months back, a 2012 Buick LaCrosse was brought into the shop with a laundry list of complaints: the radio would turn on and off randomly, the driver’s side power window wouldn’t work, and the ‘Service Theft Deterrent System’ message was constantly on. The owner had already been to the dealer and was quoted over $1,200 for a new BCM and programming. After running diagnostics, we confirmed BCM failure with multiple communication codes (U-codes). Instead of the expensive dealer route, we used our cloning service. The customer shipped us their faulty BCM, we transferred the data to a replacement unit, and shipped it back. They installed it in under 30 minutes, and every single issue was resolved. This is the power of a properly programmed module—it saves time, money, and a massive headache.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not responding correctly.
- ✔ The security system or keyless entry failing intermittently.
- ✔ Dashboard warning lights appearing without a clear cause.
- ✔ Communication error codes (often U-codes) stored in the system.
- ✔ Horn honking unexpectedly or not working at all.
A Straightforward Guide to Installation
Our cloning service makes the physical swap simple. Here’s a general guide to get you started. The BCM location for the 2012 Verano is typically below the center of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: Find the Body Control Module. Its location varies by model (see fitment list), so consult a service manual if you’re unsure.
- Disconnect and Remove: Carefully unplug the electrical connectors from the module. They have locking tabs that need to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Seat the newly programmed BCM into the mounting bracket and secure it. Reconnect all electrical connectors, ensuring they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test All Functions: Start the vehicle and test all related functions: lights, windows, locks, horn, and radio to ensure everything is operating as it should.
Important Post-Installation Steps
While our programming makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. If your airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary on certain models to ensure proper brake light and traction control operation. These are standard procedures and do not indicate a fault with the module.
Will This Fit My Vehicle?
This BCM programming service is compatible with part number 13580696 and interchanges with 123589093, 13588446, 13584692, and 13583542. It is confirmed to fit the following vehicles:
- Buick LaCrosse: 2012-2013 (LH kick panel)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash, verify ID 13580696)
- Chevrolet Camaro: 2012-2014 (RH dash)
- Chevrolet Equinox: 2012 (LH side dash)
- Chevrolet Spark: 2013 (left lower a-pillar)
- Chevrolet Volt: 2012 (RH engine compartment)
- GMC Terrain: 2012 (LH side dash)
Frequently Asked Questions
Why do I have to ship my original BCM to you?
Your original BCM contains critical, vehicle-specific security and operational data (like VIN, mileage, and key information). We extract this data and transfer it to the replacement module. This cloning process is what makes our unit plug-and-play and allows you to avoid expensive dealer programming.
Is this service truly plug-and-play?
Yes, in 99% of cases. Because we clone your original data, the vehicle will recognize the replacement BCM as its own. In some rare instances, as mentioned above, a simple relearn procedure for the airbag or brake pedal position sensor may be required with a professional scan tool.
What is the turnaround time for the programming service?
We pride ourselves on a fast and efficient process. Once we receive your original module, we typically complete the programming and ship your replacement BCM back out within 1-2 business days. We will send you tracking information as soon as it ships.
Is there a core charge for my old part?
No, there is no core charge. Our service requires your original module for data cloning, after which we will ship it back to you along with the newly programmed replacement. You get to keep your original part.
What if my airbag light turns on after I install the BCM?
This is not a defect. It simply means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A technician with a capable scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to complete the handshake and turn off the light.