End the Electrical Gremlins in Your GM Vehicle
If you’re dealing with bizarre electrical issues in your 2013 Buick Regal—like flickering lights, malfunctioning power windows, a temperamental security system, or even a no-start condition—the culprit is very likely a failing Body Control Module (BCM). As the central nervous system for your vehicle’s body electronics, a faulty BCM can turn your daily drive into a frustrating guessing game. In my 20+ years as a technician, I’ve seen these modules cause some of the most confusing symptoms, often leading to misdiagnosis and expensive, unnecessary repairs.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional programming service that clones the essential data from your original BCM directly onto this replacement unit. This means the module arrives at your door ready for installation, with no need for an expensive trip to the dealership for programming. It’s the most reliable and cost-effective way to restore your vehicle’s functionality and your peace of mind.
A Technician’s Notebook: The Case of the Haunted Equinox
A customer brought in a 2015 Equinox with a list of complaints that sounded like a poltergeist had taken up residence. The dome lights would stay on, the radio would randomly shut off, and the remote key fob worked only intermittently. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a slew of ‘U’ codes (communication errors) pointing to a network problem. Instead of chasing wires for hours, experience told me to look at the network’s hub: the BCM. By monitoring data streams, I could see the BCM was erratically dropping offline. We used this exact cloning service, and once the new module was installed, every single electrical gremlin vanished. It’s a textbook example of how a failing 2013 Regal BCM or its equivalent can create widespread, confusing issues.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On a 2013 Buick Regal, the BCM is typically found in the driver’s side of the dashboard, often behind the lower dash panel or kick panel. Its location varies for other compatible models (see fitment list).
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, remove any bolts or clips holding the module in place and take it out.
- ✔ Install the New Module: Seat the new, programmed BCM in the same position and secure it with the original hardware.
- ✔ Reconnect Everything: Firmly plug the electrical connectors into the new BCM. You should hear or feel a click. Reconnect the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all related functions: power windows, door locks, interior/exterior lights, and radio to confirm the repair was successful.
Common Signs of a Failing GM Body Control Module
- ✔ Erratic or non-functional interior and exterior lighting.
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ The anti-theft or security system light flashing, preventing the car from starting.
- ✔ Instrument cluster gauges behaving abnormally or warning lights appearing without cause.
- ✔ Remote keyless entry (fob) failure.
- ✔ Communication error codes, such as U0140, U0155, or other U-series DTCs.
- ✔ Unexplained battery drain when the vehicle is off.
How Our Simple Programming Service Works
To ensure a seamless, plug-and-play experience, this service requires your original BCM. After you complete your purchase, we will contact you with clear, step-by-step instructions for shipping your module to our facility. Please ensure your contact information is up-to-date. Once we receive your original part, our expert technicians will transfer all vehicle-specific data to the replacement unit. We then ship the ready-to-install module back to you, typically within one business day, and provide you with tracking information. Best of all, there is no core charge, so you can keep your original module.
Important Post-Installation Information
While our programming handles the critical vehicle data, some GM security and safety systems may require a handshake procedure after installation. If the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, some models may require a Brake Pedal Position sensor relearn to ensure perfect operation of the brake lights and stability control. Always consult a factory service manual for vehicle-specific details.
Verified Fitment For These GM Models
This module is a direct replacement for part numbers 13584695, 13586273, 13580697, 13588447, 13589197, 13589324, and 13589325 and is confirmed to fit the following vehicles:
- Buick Encore: 2013-2014
- Buick Regal: 2013
- Buick Verano: 2013-2017
- Cadillac SRX: 2013
- Chevrolet Cruze: 2013-2015, 2016 (Limited)
- Chevrolet Equinox: 2013-2017
- Chevrolet Malibu: 2013
- Chevrolet Orlando: 2013-2014
- Chevrolet Spark: 2014-2015 (Gasoline)
- Chevrolet Trax: 2013-2014
- Chevrolet Volt: 2013 (ID 13580697 or 13586273)
- GMC Terrain: 2013-2017
Frequently Asked Questions
What is a BCM and why is it important?
The Body Control Module (BCM) is a computer that manages your vehicle’s non-engine related functions, like lights, windows, security, and door locks. When it fails, these systems become unreliable. Our programmed 2013 Regal BCM is the perfect fix.
Why is cloning my original BCM better than just installing a used one?
Cloning transfers your car’s unique Vehicle Identification Number (VIN) and security settings. A standard used BCM won’t have this data, causing a no-start condition and requiring expensive dealer programming. Our service makes the replacement plug-and-play.
How does the mail-in service work?
It’s simple. After you place your order, we’ll email you a prepaid shipping label and instructions. You send us your original BCM, we transfer the data to the new unit, and ship it back to you ready for installation.
Do I need any special tools to install this?
For the physical installation, you’ll only need basic hand tools to access the module. Our programming service eliminates the need for advanced diagnostic scan tools for setup, though in rare cases a post-install sync procedure might be needed for the airbag system.
What if my airbag light is on after I install the module?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by any professional shop with a compatible scan tool.
Is there a core charge for my old part?
No. We have a no-hassle policy with no core charge. You are free to keep your original module after sending it in for data cloning.