Restore Your Vehicle’s Electrical System with a Hassle-Free Solution
Are you chasing electrical gremlins in your Buick, Chevy, or GMC? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or even a no-start condition can often be traced back to a single, critical component: the Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen firsthand how a failing BCM can turn a reliable vehicle into a source of constant frustration. The BCM is the central hub for your car’s body electronics, and when it fails, chaos ensues. This isn’t just an inconvenience; it can be a significant safety issue.
We offer a straightforward and reliable fix. This listing is for a replacement Body Control Module (interchangeable with part number 13577850) that comes pre-programmed with your vehicle’s exact data. The process is simple: you purchase this module, ship your original BCM to us, and we handle the rest. Our technicians will professionally clone all the critical information—including your VIN, mileage, and specific options—from your old unit to this replacement. We then ship it back to you, ready for a true plug-and-play installation. This service completely eliminates the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay: The Case of the Haunted Regal
A customer brought in a 2011 Buick Regal with some of the strangest symptoms I’d ever seen. The horn would honk randomly, the interior lights would pulse, and the car would occasionally refuse to start. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a flurry of communication error codes (U-codes) pointing to a network problem. From experience, I knew these ‘ghost in the machine’ issues are classic signs of an internally failing BCM. Instead of a costly new module and programming from the dealer, we used our cloning service. The customer sent us their faulty BCM, we transferred the data, and sent the replacement back. They installed it in under 30 minutes, and every single electrical issue vanished. It’s a perfect example of how the right part and service can save hundreds of dollars and a massive headache.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system alarm sounding randomly or causing a no-start condition.
- ✔ Inconsistent operation of the horn, windshield wipers, or climate control.
- ✔ Multiple warning lights on the dashboard with no apparent cause.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0100, U0140, or other U-series codes.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most of these vehicles, the BCM is located in the driver’s side of the dashboard or in the driver’s side kick panel area. A quick search for your specific model will confirm its exact position.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that must be depressed to be released. Then, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect the Battery: Re-attach the negative battery terminal. Start the vehicle and test all functions (lights, windows, locks, etc.) to ensure proper operation.
Post-Installation Checks & Procedures
Because this 2011 Regal BCM is cloned from your original, most vehicles will not require any additional steps. However, in some cases, the following procedures may be necessary:
- 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 certain 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 Vehicle Compatibility
This module is a direct replacement for part numbers 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420. It is confirmed to fit the following vehicles:
- 2011 Buick Regal (Body Control, LH dash, w/o opt AUA)
- 2010 Cadillac SRX (Body Control, LH dash)
- 2011-2013 Chevrolet Cruze (Body Control, LH kick panel)
- 2010 Chevrolet Equinox (Body Control, LH side dash)
- 2010-2011 GMC Terrain (Body Control, LH side dash)
Frequently Asked Questions
How does the programming service work?
It’s simple. After you place your order, we will provide you with instructions to ship your original BCM to our facility. Our technicians then extract the unique data and transfer it to the replacement module. We ship the programmed module back to you, ready for installation.
Do I need to do any programming myself?
No. The main benefit of our service is that the module arrives fully programmed and ready to install. This saves you from needing specialized tools or paying for expensive dealership programming.
Where is the BCM located on a 2011 Buick Regal?
On the 2011 Regal, the Body Control Module is typically found behind the lower left-hand side of the dashboard, near the steering column.
What if my airbag light comes on after I install it?
This is uncommon, but if it happens, it means the airbag system needs to be synchronized with the BCM. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure, a quick task for most repair shops.
Is there a core charge for my old part?
No, there is no core charge. We need your original module to perform the cloning service, but you are not required to return it for a refund.
Will this 2011 Regal BCM fix my specific problem?
If your vehicle’s issues match the common symptoms of a failing BCM and it has been properly diagnosed, this module is the correct solution. It restores the original factory function by using your car’s own data.