If you’re dealing with baffling electrical issues in your 2013 Chevrolet Cruze or another compatible GM vehicle, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable car into a source of constant frustration. This isn’t just a part; it’s a solution that gets to the heart of those problems without the exorbitant costs and scheduling headaches of a dealership visit.
This listing is for a fully tested, replacement BCM that we will program with your vehicle’s exact data. The process is simple: after your purchase, you’ll ship your original BCM to our facility. We then perform a complete data transfer—also known as cloning—to this replacement module. This ensures that your vehicle’s VIN, mileage, security information, and specific options are perfectly preserved. The result is a true plug-and-play module that is ready for installation the moment you receive it back from us. This service covers part number 13574844 and other interchangeable numbers listed below.
Is Your GM Vehicle Showing These Symptoms?
A faulty BCM is often the central cause of widespread, seemingly unrelated electrical problems. In my shop, these are the most common complaints I trace back to a failing module. Check if any of these sound familiar:
- ✔ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔ The security or anti-theft light stays on, preventing the car from starting.
- ✔ Wipers or turn signals activating on their own or failing to work when needed.
- ✔ Dashboard warning lights for the airbag, ABS, or traction control system are illuminated.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), often in the U-series (e.g., U0100, U0140), indicating a loss of communication with other modules.
- ✔ Inconsistent or complete failure of the key fob functions.
From the Diagnostic Bay: The Ghost in the Machine
A customer brought in a 2013 Cruze with a truly bizarre set of symptoms. The radio would randomly shut off, the driver’s side turn signal would blink at double speed (even with a good bulb), and occasionally, the car wouldn’t recognize the key. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a dozen communication codes pointing to the BCM. These modules, especially on the Cruze, are located in the driver’s side kick panel—an area prone to moisture from wet shoes or a minor windshield leak. A failing 2013 Cruze BCM was the culprit. Cloning their original module’s data onto our replacement unit solved every single issue instantly, saving them a tow to the dealer and over $500 in programming fees.
Your Straightforward BCM Installation Guide
Once you receive your programmed module back from us, installation is a manageable job for a confident DIYer. Here is a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the 2013 Cruze, the BCM is typically found behind the kick panel on the driver’s side, near the interior fuse box. For other models, its location may be under the dash.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off with a trim removal tool to avoid scratching.
- Disconnect and Remove: The BCM has several large electrical connectors. Depress the locking tabs on each connector and gently pull them straight out. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your newly programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place. You can’t mix them up, as they are uniquely keyed.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, wipers, and start the engine.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a quick synchronization procedure after the BCM is reconnected. This is normal and can often be done with a high-end scan tool.
- Airbag System Sync: If the airbag light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed to re-establish communication between the BCM and the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be required to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified professional if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for several part numbers and fits a range of GM vehicles. Please match your original part number to one in the list below to ensure compatibility. This service is for part number 13578420 and its interchanges.
- Part Numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, 13578420
- Chevrolet Cruze: 2011, 2013 (w/ opt ATH)
- Chevrolet Equinox: 2010
- GMC Terrain: 2010, 2011 (check ID)
- Buick Regal: 2011 (w/o opt AUA)
- Cadillac SRX: 2010
Frequently Asked Questions
How does the mail-in programming service work?
After you place your order, we will contact you with detailed instructions on how to ship your original BCM to us. Once we receive it, we transfer all the critical data to the replacement module and ship it back to you, usually within 1-2 business days.
Do I need to send my keys or any other parts?
No, you only need to send us your original Body Control Module. Because we are cloning its data, all of your existing keys will work perfectly with the new module upon installation.
Is this a guaranteed fix for my 2013 Cruze BCM problems?
This service provides a fully functional, programmed BCM that resolves issues caused by a faulty module. It’s crucial to have your vehicle properly diagnosed to confirm the BCM is the source of the problem before ordering.
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 for the cloning process. Please contact us with details about your module’s condition if you have concerns.
Is there a core charge?
No, there is no core charge for this service. We need your original module to perform the data transfer, but you are not required to leave it with us. However, most customers find it convenient to let us handle the disposal of the faulty original part.