Restore Full Electrical Function to Your GM Vehicle
If you’re dealing with bizarre and frustrating electrical problems in your 2012 Buick Regal or other compatible GM vehicle, a failing Body Control Module (BCM) is often the culprit. As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can wreak havoc, causing everything from flickering lights and unresponsive power windows to a car that won’t even start. This isn’t just an inconvenience; it can be a major safety and security concern. This listing offers a straightforward, reliable solution: a replacement BCM, part number 13580696, that arrives at your door fully programmed and ready for installation.
We take the guesswork and high dealership costs out of the equation. The process is simple: after your purchase, you’ll ship your original BCM to our facility. Our expert technicians will then clone all the essential vehicle-specific data—including VIN, mileage, and key information—onto this replacement module. This makes the new unit a true plug-and-play component, eliminating the need for expensive and time-consuming programming at a dealership. It’s the most efficient way to get your car back to 100% functionality.
Case Study: The Ghost in the LaCrosse’s Electrical System
A customer brought in a 2013 LaCrosse with a classic “ghost in the machine” problem. The radio would turn on and off by itself, the dome light would stay on, and occasionally the alarm would trigger for no reason. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found several U-codes (U0140, U0155) indicating a loss of communication with the BCM. Instead of ordering a new, blank module from the dealer and scheduling a separate programming session, we used our cloning service. We transferred the data from his failing BCM to a quality replacement. The customer installed it himself in under 30 minutes in our parking lot. The ghost was gone, and he saved hundreds of dollars compared to the dealership quote. This is the power of a pre-programmed solution.
Is Your GM Vehicle Showing These BCM Failure Signs?
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The anti-theft or security system light is on, preventing the car from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights appearing randomly with no apparent cause.
- ✔ Diagnostic trouble codes (DTCs) related to loss of communication, such as U0140, U0141, or other U-codes.
- ✔ Wipers activating on their own or not responding to the switch.
Your Straightforward BCM Installation Guide
Installing your pre-programmed BCM is a manageable task for a confident DIYer. While the exact location varies by model (see fitment list), the general process is consistent.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: The BCM is typically found inside the cabin, often in the driver’s or passenger’s side kick panel, under the dash, or behind the glove box. Consult a service manual for your specific model if you’re unsure.
- Disconnect and Remove: Carefully unplug the 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 New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
- Reconnect Power: Re-attach the negative battery terminal. Your vehicle’s core functions should now be restored.
Important Post-Installation Notes
While our programming service makes this a plug-and-play repair, some vehicle systems may require a final handshake to recognize the new module. 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. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure the brake lights and traction control system function correctly.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Compatibility for Your Vehicle
This BCM is a direct-fit, programmed solution for the following vehicles and part numbers. It is compatible with part numbers 13580696, 123589093, 13588446, 13584692, and 13583542.
- Buick LaCrosse: 2012-2013 (LH kick panel, ID 13580696)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash, ID 13580696)
- Chevrolet Camaro: 2012-2013 (RH dash), 2014 (RH dash, Coupe)
- 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
How does the programming service work?
After you place your order, we will contact you with simple instructions to ship your original BCM to us. We then extract the vehicle-specific data and transfer it to the replacement module. We ship the programmed module back to you, ready for installation.
Do I need to send my original BCM if it’s dead or not communicating?
In most cases, even if the BCM has failed, we can still retrieve the necessary data for cloning. If your module is severely damaged (e.g., by fire or water), please contact us first to discuss options.
Is this a plug-and-play part?
Yes. Because we clone the data from your original module, this replacement BCM is a true plug-and-play solution. It eliminates the need for any additional programming by a dealer or mechanic after installation.
What is your core policy?
There is no core charge for this item. You are not required to return your original module to us after the cloning service is complete, but we must have it initially to perform the programming.
What if the airbag light comes on after I install it?
This can occasionally happen. It simply means the new BCM needs to be electronically introduced to the airbag system. A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems and turn off the light.