Restore Full Functionality to Your Vehicle with a Pre-Programmed BCM
Are you battling bizarre electrical issues in your Buick, Chevy, or GMC? Flickering dashboard lights, unresponsive power windows, or a car that refuses to 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 how a faulty BCM can create a cascade of frustrating, hard-to-diagnose problems. This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional cloning service for this BCM, part number 13578420. Simply send us your original module, and we’ll transfer its unique vehicle data to this fully tested replacement. When you receive it back, it’s ready for a straightforward installation, saving you from costly dealership programming fees and complex setup procedures.
Is Your Vehicle Showing These Telltale BCM Failure Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ Erratic behavior from the instrument cluster, with gauges dropping out or warning lights appearing randomly.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Communication error codes, such as U0100, U0140, or other ‘U’ codes, indicating a loss of communication with other modules.
- ✔ Horn, wipers, or other accessories activating on their own or not working at all.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2011 GMC Terrain that came into my bay with a laundry list of complaints. The owner said the radio would shut off, the dome lights would flicker, and sometimes the power liftgate wouldn’t open. He’d already replaced the battery and checked all the fuses. Diagnostics showed a dozen intermittent communication codes across different systems. Instead of chasing each code individually—a costly and time-consuming rabbit hole—we focused on the common link: the BCM. It’s the traffic cop for all these body-related functions. A failing BCM can send corrupt data, causing chaos on the vehicle’s network. By providing a cloned 2011 Regal BCM (which shares the same architecture), we restored stable communication. The new module, pre-programmed with the original’s data, was a simple swap that fixed every single issue at once. It’s a perfect example of how targeting the root cause saves time and money.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- ✔ Locate the BCM: On most compatible models (like the Regal, Cruze, or Equinox), the BCM is found in the cabin, typically on the driver’s side behind the lower dash panel or within the LH kick panel area.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. 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 pre-programmed BCM in place and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a quick sync. Please be aware of the following possibilities:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a simple ‘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 and clear the light.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor recalibration might be necessary to ensure the brake lights and traction control system function correctly.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This BCM programming service is a direct solution for part number 13578420 and is interchangeable with the following part numbers: 13577850, 13505326, 13500384, 13574844, 13504004, and 13504494. It is confirmed to fit the following vehicles:
- 2011 Buick Regal: Body Control (BCM); (LH dash), w/o opt AUA
- 2010 Cadillac SRX: Body Control (BCM); (LH dash)
- 2011 & 2013 Chevrolet Cruze: Body Control (BCM); (LH kick panel)
- 2010 Chevrolet Equinox: Body Control (BCM); (LH side dash), body control
- 2010 & 2011 GMC Terrain: Body Control (BCM); (LH side dash), body control
Frequently Asked Questions
How exactly does this cloning service work?
After you purchase, we’ll provide instructions for shipping your original BCM to our facility. Once we receive it, our technicians will extract the critical vehicle-specific data (like VIN, mileage, and key information) and flash it onto the replacement module. We then ship the ready-to-install BCM back to you. This ensures seamless integration with your car’s other electronic systems.
Do I need to do any programming myself?
No. The main benefit of our service is that all programming is done for you. The module you receive will be plug-and-play, eliminating the need for a trip to the dealership or the use of expensive scan tools for initial setup.
Do I need to send my old BCM back for a core charge?
No, there is no core charge for this item. You are required to send us your original BCM for the data cloning service, but you can keep it afterward. We will ship it back to you along with your newly programmed module.
What if the airbag light comes on after I install it?
This is a known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a compatible diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is this better than buying a used BCM from a junkyard?
Absolutely. A used BCM from another vehicle will contain the wrong VIN and security information, and it will not work in your car without being reprogrammed by a dealer—a service that can be expensive and is not always possible. Our service provides a part that is guaranteed to be electronically matched to your specific vehicle.