Restore Control and End Electrical Chaos in Your GM Vehicle
Are you battling a car that seems to have a mind of its own? Flickering lights, malfunctioning power windows, a security system that randomly goes off, or a car that refuses to start can be incredibly frustrating. These aren’t just random glitches; they’re classic signs that the central command center of your vehicle’s electronics—the Body Control Module (BCM)—is failing. For your 2011 Regal BCM and many other GM models, this isn’t just a part failure; it’s a communication breakdown that can bring your daily drive to a halt.
As a technician with over two decades of experience under the hood, I’ve seen how a faulty BCM can create a diagnostic nightmare. It acts as the traffic controller for dozens of functions, from your interior lights and door locks to communicating with the engine and transmission computers. When it fails, the symptoms can be widespread and confusing. That’s why we offer a straightforward, reliable solution: a replacement BCM with a complete data cloning service.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Buick LaCrosse (which uses the same BCM family) with an issue that had stumped two other shops. The radio would turn off, the dash lights would flicker, and occasionally, the car wouldn’t recognize the key fob. No consistent error codes were stored, just a few intermittent U0140 (Lost Communication With Body Control Module) faults. After verifying the power and ground connections to the BCM were solid, we knew the module’s internal processor was failing. Instead of a costly trip to the dealer for a new module and hours of programming, we performed our cloning service. The customer sent us their original BCM, we transferred the data to our replacement unit, and sent it back. The installation was a simple swap, and all the bizarre electrical gremlins were gone for good. It’s a fix I’ve successfully performed hundreds of times.
Common Signs of a Failing BCM
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system activates without reason, preventing the car from starting.
- ✔ The instrument cluster gauges behave erratically or go dark completely.
- ✔ The key fob stops working or works intermittently.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Problems with the HVAC (heating and air conditioning) controls.
How Our Simple Cloning Service Works
Forget about expensive dealership visits, towing fees, and the hassle of programming a new module from scratch. Our service is designed to be the easiest path back to a reliable vehicle. After you place your order, we will contact you with simple instructions to ship your original BCM to our facility. Once we receive it, our expert technicians will transfer all the critical data—including VIN, mileage, and key information—to a fully tested replacement BCM. We then ship the plug-and-play module back to you, typically within 24-48 hours. No core charge means you can keep your original part.
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 the 2011 Regal, the BCM is typically found behind the dash on the left-hand (driver’s) side. For other models, its location can vary (see fitment list for common locations). Consult a service manual if you are unsure.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. Most have a locking tab that needs to be pressed or lifted. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Seat the replacement BCM onto the mounting bracket and secure it. Reconnect all the electrical harnesses firmly, ensuring they click into place.
- ✔ Reconnect the Battery: Reattach the negative battery terminal.
- ✔ Perform Post-Install Checks: Start the vehicle and test all body functions—lights, windows, locks, radio, etc. Note that some vehicles may require the additional procedures outlined below.
Important Post-Installation Notes
While our programming service makes this a plug-and-play repair, some vehicle systems may need to be re-synced 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 new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light operation and to prevent issues with the traction control system.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified automotive technician for procedures specific to your vehicle.
Verified Vehicle Compatibility
This BCM and programming service is compatible with a wide range of GM vehicles. Please match your part number or vehicle from the list below. This module is a direct replacement for part numbers: 13579004, 13580198, 13582396, 13583450, 13586856, 13582688, 13586278, 13501737, 13501739, 13577924, 13580773, and 13583451.
- Buick LaCrosse: 2011, 2012
- Buick Regal: 2011 (w/opt AUA)
- Cadillac SRX: 2011, 2012
- Chevrolet Camaro: 2011 (Convertible)
- Chevrolet Cruze: 2012
- Chevrolet Equinox: 2011
- Chevrolet Orlando: 2012
- Chevrolet Volt: 2011, 2013
- GMC Terrain: 2011
Frequently Asked Questions
What is this service exactly?
This is a programming service. You send us your original BCM, we transfer its data to a replacement unit, and mail the ready-to-install replacement back to you. This makes the repair plug-and-play, saving you a trip to the dealership.
Why do I have to send my original BCM?
Your original BCM contains your vehicle’s unique VIN, security information, and specific options. By cloning this data, the replacement module will work seamlessly with your car’s other computers without requiring expensive programming tools.
Is this a guaranteed fix for my car’s electrical problems?
If your vehicle is exhibiting the common symptoms of BCM failure and a professional diagnosis has confirmed the BCM is the fault, this service is a reliable and permanent solution. It addresses internal hardware and software failures within the module itself.
How long does the process take?
Once we receive your original module, our cloning and testing process typically takes 1-2 business days. We then ship the replacement module back to you. We will provide tracking information as soon as it ships.
Do I need any special tools for installation?
For the physical installation, you will only need basic hand tools to access and unbolt the module. However, as noted, a professional scan tool may be required for post-installation procedures like an airbag system sync if the warning light appears.
What if my part number is slightly different?
This module and service are compatible with all part numbers listed in the description, including 13580773, 13583450, 13579004, and more. As long as your part number is on our list, this is the correct solution.