Restore Full Electrical Function to Your Vehicle
Are you experiencing a cascade of frustrating electrical problems in your vehicle? From flickering lights and malfunctioning power windows to a car that won’t start, the Body Control Module (BCM) is often the culprit. The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can create widespread and confusing symptoms. This listing is for a replacement BCM, part number 13578420, that is professionally programmed using the data from your original module. This cloning service ensures a true plug-and-play solution, eliminating the need for expensive and time-consuming dealership programming.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Headlights, taillights, or interior lights behaving erratically or not working at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Unexplained warning lights on the dashboard, such as the airbag or security light.
- ✔ The vehicle failing to start, even with a good battery and starter.
- ✔ Wipers or radio turning on and off by themselves.
From the Diagnostic Bay
We had a 2011 GMC Terrain come into the shop with a list of bizarre symptoms the owner called ‘ghosts in the machine.’ The horn would honk randomly, the dome light would stay on, and the driver’s side window was stuck down. After checking fuses, relays, and wiring harnesses with no success, we connected a high-level scan tool. The BCM was throwing dozens of communication fault codes. Instead of a complex and costly rewiring job, we installed a replacement BCM cloned from the original unit. Every single electrical gremlin vanished instantly. It’s a powerful reminder that when multiple, unrelated systems fail at once, the central controller is the most likely cause.
The Simple, Cost-Effective Solution: Our Cloning Service
Don’t let a faulty BCM keep your car off the road. Our service is designed to be simple and effective. After you purchase, we will contact you to arrange for you to ship your original BCM to our facility. Once we receive it, our technicians will extract the unique vehicle-specific data—including the VIN, key information, and security settings—and flash it onto this replacement module. We then ship the ready-to-install BCM back to you. This process makes the replacement of your 2011 Regal Body Control Module a straightforward, plug-and-play job that you can do in your own garage.
Installation and Post-Install Procedures
Installation is as simple as disconnecting the battery, locating and removing your old BCM (typically found in the driver’s side dash or kick panel), and plugging in the replacement unit. Once installed, you may need to perform one or two simple relearn procedures depending on your specific vehicle:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be done with a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment for Multiple Makes and Models
This BCM is a direct replacement for a wide range of GM vehicles. It is compatible with the following part numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420. Please verify your part number and check the fitment list below to ensure compatibility.
- 2011 Buick Regal: Body Control (BCM); (LH dash), w/o opt AUA
- 2010-2011 GMC Terrain: Body Control (BCM); (LH side dash)
- 2011-2013 Chevrolet Cruze: Body Control (BCM); (LH kick panel)
- 2010 Cadillac SRX: Body Control (BCM); (LH dash)
- 2010 Chevrolet Equinox: Body Control (BCM); (LH side dash)
Frequently Asked Questions
How does the cloning service work?
After your purchase, we will provide you with shipping instructions to send your original BCM to us. We then transfer its data to the replacement BCM and ship it back to you, usually within 1-2 business days of receiving your module.
Is this BCM truly plug-and-play?
Yes. Because we clone the exact data from your original module, the replacement unit will be recognized by your vehicle’s other computers, avoiding the need for dealer programming. In some cases, minor relearn procedures may be necessary after installation.
What part numbers does this module replace?
This module is a direct replacement for part numbers 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420.
What if my airbag light is on after I install it?
This is a common occurrence. You will need a technician with a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Do I need to send my keys with the BCM?
No, you do not need to send your keys. All the necessary key and security data is stored within the BCM itself, which is what we transfer during the cloning process.
Is there a core charge for my old BCM?
No, there is no core charge. You are sending us your original module for data transfer only. We use it to program the replacement and then ship the replacement to you.