Tired of Unpredictable Electrical Problems in Your GM Vehicle?
If you’re dealing with flickering lights, malfunctioning power windows or locks, a security system that has a mind of its own, or even a no-start condition, the culprit is often a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable car into a source of daily frustration. It’s the central hub for your car’s comfort and convenience features, and when it goes bad, the symptoms can be confusing and widespread.
This is a professionally programmed replacement Body Control Module, part number 13580696. We eliminate the need for expensive dealership visits and complex programming tools. Our unique cloning service makes this a simple, plug-and-play solution. You simply send us your original BCM, we transfer all the critical data (including VIN and security information) to this replacement unit, and ship it back to you ready for installation. It’s the most straightforward and reliable way to get your car back to normal.
Common Signs of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The security system light is on, or the alarm goes off randomly.
- ✔ Key fob not working correctly.
- ✔ Instrument cluster gauges behaving erratically.
- ✔ Communication error codes, such as U0140, stored in the system.
- ✔ The vehicle will not start, but the battery and starter are good.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2012 Buick LaCrosse that came into the shop with a list of symptoms that made no sense together. The radio would switch stations on its own, the driver’s side window wouldn’t go down, and the anti-theft light would flash randomly while driving. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a slew of communication codes pointing to the BCM. Instead of a costly new module and hours of programming at the dealer, we used a cloned BCM. The customer shipped us their original module, we transferred the data, and sent the replacement back. They installed it in under 30 minutes in their driveway. It was a perfect fix—all the bizarre electrical gremlins vanished instantly. This process saves time, money, and a massive headache.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On a 2012 Buick Regal, the BCM is typically found in the driver’s side of the dashboard, often behind the lower dash panel to the left of the steering column. Locations vary on other models (see fitment list for clues).
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, remove any bolts or clips holding the module in place and take it out.
- ✔ Install the New Module: Seat your newly programmed BCM in the mounting bracket and secure it. Reconnect all electrical connectors, ensuring they click firmly into place.
- ✔ Power Up: Reconnect the negative battery terminal.
- ✔ Test All Functions: Start the vehicle and test your power windows, locks, lights, key fob, and other related systems to confirm the repair was successful.
Post-Installation Procedures
In most cases, this module is a true plug-and-play solution. However, due to the complex nature of modern vehicle systems, some models may require additional steps:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some vehicles, a brake pedal position sensor recalibration may be needed to ensure proper traction control and brake light operation.
Disclaimer: We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the installation or post-installation process.
Verified Vehicle Compatibility
This BCM is a direct fit for the following vehicles and part numbers. It replaces part numbers 13580696, 123589093, 13588446, 13584692, and 13583542.
- Buick LaCrosse: 2012-2013 (LH kick panel)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash, 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
How does the programming service work?
After you purchase, we will provide 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 ready-to-install module back to you.
Do I need to send my original BCM?
Yes. This service requires your original module to clone the necessary security and vehicle option data. This ensures the replacement is 100% plug-and-play and avoids anti-theft system issues.
Is there a core charge?
No, there is no core charge. You can keep your original module after you send it to us for the data transfer.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still extract the necessary data. Please contact us with your specific symptoms before ordering if you suspect your module is completely non-functional.
Will this fix my specific problem?
This module will correct issues directly caused by a faulty BCM. It’s crucial to properly diagnose the problem, as similar symptoms can sometimes be caused by wiring or other components. The symptoms listed above are strong indicators of BCM failure.