Restore Your Vehicle’s Electrical System with a Hassle-Free Solution
Are you dealing with baffling electrical issues in your Chevy Cruze or other GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a car that won’t start can all point to one culprit: a failing Body Control Module (BCM). As the central nervous system for your car’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating ordeal. The dealership solution often involves expensive diagnostics, a new module, and costly programming fees. We offer a smarter, more affordable path back to reliability.
This is a comprehensive programming service for the BCM with part number 13578420. Instead of shipping you a blank module that requires dealer intervention, we clone the essential data from your original BCM directly onto this replacement unit. The result is a true plug-and-play module, pre-configured for your vehicle’s specific options and security information. This process eliminates the need for a trip to the dealership, saving you significant time and money.
A Technician’s Notebook: The Cruze with a Mind of Its Own
A customer brought in a 2013 Cruze with a list of complaints that sounded like the car was haunted. The dome light would stay on, the radio would randomly shut off, and the driver’s side window wouldn’t go down. Initially, they suspected individual switches or motors, but there were no specific trouble codes for those components. After checking the basics, my experience pointed toward the BCM. In my shop, I’ve seen dozens of these GM vehicles where the BCM develops internal faults, causing multiple, unrelated electrical systems to fail simultaneously. By swapping in a cloned 2013 Cruze BCM, we restored all functions in under an hour, proving that a central failure was the root cause of the widespread ‘gremlins’.
Is Your Vehicle Showing These Signs of BCM Failure?
- ✔ Unpredictable behavior from interior/exterior lights (flickering, staying on/off).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system or keyless entry is malfunctioning or preventing the car from starting.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ Instrument cluster warnings appear intermittently without a clear cause.
- ✔ Communication error codes (like U0140 – Lost Communication With Body Control Module) are present.
Your Straightforward BCM Installation Guide
Installing your programmed BCM is a direct process. On a 2013 Cruze, the BCM is typically located in the driver’s side kick panel area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: Remove the driver’s side kick panel (the plastic trim near your left foot) to access the module.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. 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 new, programmed BCM in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions—lights, windows, locks, etc.—to confirm the repair.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a quick sync-up. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This syncs the new BCM with the airbag system. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be needed to ensure the brake lights and traction control system function as intended.
- No Core Required: You do not need to return your old BCM to us after the repair. There is no core charge.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Fitment For These GM Vehicles
This programming service and module are compatible with a range of GM vehicles. It is a direct replacement for part numbers 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420. Please verify your part number before ordering.
- 2013 CHEVROLET CRUZE – Body Control (BCM); (LH kick panel), w/opt ATH
- 2011 CHEVROLET CRUZE – Body Control (BCM); (LH kick panel)
- 2011 BUICK REGAL – Body Control (BCM); (LH dash), w/o opt AUA
- 2010 CADILLAC SRX – Body Control (BCM); (LH dash)
- 2010 CHEVROLET EQUINOX – Body Control (BCM); (LH side dash), body control
- 2010-2011 GMC TERRAIN – Body Control (BCM); (LH side dash), body control (fits multiple ID numbers)
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, our technicians will extract the key data and transfer it to the replacement module. We then ship the ready-to-install BCM back to you.
Is this a plug-and-play part?
Yes, because we clone your vehicle’s original data, the replacement BCM arrives ready to be installed without any additional programming required from a dealership. In some rare cases, a minor relearn procedure may be needed as noted in the description.
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 before ordering if your module is severely damaged by water or fire, or if a scan tool cannot communicate with it at all.
Do I need to send my keys with the BCM?
No, you do not need to send your keys. All the necessary security information is stored within the BCM itself, which is what we transfer during the cloning process.
How long does the service take?
Our programming service is typically completed within 1-2 business days after we receive your original module. We then ship it back to you, and tracking information will be provided.