Restore Your Vehicle’s Functionality with a Plug-and-Play BCM Solution
Are you battling bizarre electrical issues in your Buick, Chevy, or GMC? Flickering lights, malfunctioning power windows, a stubborn security system, or an engine that won’t start can often be traced back to a single culprit: a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can turn a reliable vehicle into a source of constant frustration. This isn’t just a part; it’s a permanent fix for those electrical gremlins.
This listing is for a replacement Body Control Module, part number family 13578420, that comes pre-programmed with your vehicle’s exact data. We accomplish this through a simple cloning service. After your purchase, you’ll ship us your original BCM. We then transfer all the critical information—including VIN, mileage, and security keys—to this fully tested replacement unit. The result? A module that is 100% plug-and-play, eliminating the need for expensive and time-consuming dealership programming. This is the most reliable and cost-effective way to get your car back to perfect working order.
Case Study: A Tricky Diagnosis
I remember a 2011 GMC Terrain that came into my shop with a laundry list of complaints from the owner. The radio would turn on and off, the dome lights had a mind of their own, and occasionally, the vehicle wouldn’t start. The owner had already replaced the battery and alternator with no luck. A scan showed a storm of communication codes (U-codes) pointing to multiple modules. This is a classic sign of a failing BCM acting as a noisy node on the CAN bus network. Instead of chasing each code, we focused on the central hub. By swapping in a cloned 2011 Regal Body Control Module (which shares the same architecture), all the phantom issues disappeared instantly. It’s a powerful reminder that sometimes the most complex problems have a single, central solution.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a faulty BCM is the likely cause. Don’t let these issues go unchecked, as they can worsen over time.
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system or keyless entry failing intermittently.
- ✔ The instrument cluster displaying incorrect information or warning lights.
- ✔ Intermittent no-start or no-crank conditions.
- ✔ Diagnostic trouble codes (DTCs) related to module communication, such as U0100, U0140, or other U-series codes.
A Straightforward Guide to Installation
Once you receive your programmed module, installation is simple. This process is designed to be accessible for both seasoned mechanics and determined DIYers.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On these GM models, the BCM is typically found in the driver’s side of the dashboard or in the driver’s side kick panel. Consult your vehicle’s service manual for the exact location.
- Remove the Original Module: Carefully unplug the electrical connectors. Most have a locking tab that needs 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 and securely reconnect all electrical connectors.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all related functions: lights, windows, locks, and wipers to confirm the repair was successful.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a quick sync-up procedure after the new BCM is installed.
- 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 recalibration might be necessary to ensure the brake lights and traction control system function as intended.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This module and programming service are guaranteed to be a direct fit for the following vehicles and part numbers. Please match your part number to ensure compatibility.
- Compatible Part Numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, 13578420
- Buick Regal: 2011 (Body Control, LH dash, w/o opt AUA)
- Buick SRX: 2010 (Body Control, LH dash)
- Chevrolet Cruze: 2011, 2013 (Body Control, LH kick panel)
- Chevrolet Equinox: 2010 (Body Control, LH side dash)
- GMC Terrain: 2010, 2011 (Body Control, LH side dash)
Frequently Asked Questions
How does the programming service work?
After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the unique data and program it into the replacement module. We then ship the plug-and-play replacement back to you, typically within 24-48 hours of receiving your original part.
Do I need to send my original BCM? Why?
Yes, sending your original module is required. This is how we guarantee a 100% plug-and-play solution. Cloning the data from your BCM ensures the replacement has the correct VIN, security information, and software for your vehicle’s specific options, avoiding any need for dealership intervention.
Is this a new or used part?
This is a thoroughly tested, certified working part sourced from a recycled vehicle. Each unit undergoes a comprehensive inspection and functional testing to ensure it meets or exceeds OEM standards for performance and reliability before being programmed for your vehicle.
What is a core charge?
There is no core charge for this item. You are free to keep your original module after you receive the programmed replacement from us.
Will this 2011 Regal Body Control Module fix my specific problem?
This module corrects issues directly caused by a failing BCM, such as problems with lights, locks, windows, and security systems. While it is a common failure point, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause of your vehicle’s issues.