Restore Your Vehicle’s Electrical System with a Pre-Programmed BCM
Is your Buick, Chevy, or GMC plagued by baffling electrical problems? Flickering lights, a dead instrument cluster, power windows with a mind of their own, or a security light that prevents your car from starting are all classic signs of a failing Body Control Module (BCM). As the central computer for your vehicle’s comfort and security features, its failure can create chaos. This isn’t just an annoyance; it’s a reliability issue. We offer a straightforward, reliable solution: a replacement BCM, professionally programmed with your vehicle’s exact data, making the repair process as simple as possible.
Our unique cloning service eliminates the need for expensive dealership visits and complex programming tools. Here’s how it works: After you place your order, we’ll provide instructions for shipping your original BCM to our facility. Once we receive it, our expert technicians will extract the critical vehicle-specific data—including VIN, mileage, and key information—and flash it directly onto this replacement module. We then ship the fully programmed unit back to you, ready for installation. This ensures a seamless integration with your vehicle’s existing systems, getting you back on the road without the typical programming headaches.
A Technician’s Notebook: The Case of the Confused Terrain
A 2011 GMC Terrain came into a partner shop with a laundry list of complaints. The radio would turn on and off, the turn signals worked intermittently, and sometimes the vehicle wouldn’t start, flashing a ‘Service Theft Deterrent System’ message. The owner had already replaced the battery, suspecting a simple voltage issue. After confirming the battery and alternator were fine, my diagnostic process pointed straight to the BCM. Communication codes like U0140 were present. Instead of a costly dealership replacement and tow, the shop sent us the original BCM. We cloned it to a replacement unit, and they had it back in two days. The install took them less than 30 minutes, and every single electrical gremlin was gone. It’s a perfect example of how this service saves time, money, and diagnostic frustration.
Signs Your GM BCM is Failing
A faulty BCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing several of the following issues, your BCM is the likely culprit. This is especially true if you see communication-related Diagnostic Trouble Codes (DTCs) like U0100, U0140, or B1001.
- ✔ Unpredictable power window or door lock operation.
- ✔ Horn honking randomly or not working at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ Instrument panel gauges behaving erratically or going dark.
- ✔ ‘Service Security System’ or similar warnings on the dash.
- ✔ Intermittent no-start condition, even with a good battery.
- ✔ A/C and climate control functions failing to respond.
A Straightforward Guide to Your BCM Installation
With our cloning service, the complex software work is already done. Your job is the physical swap, which is manageable for a DIY enthusiast with basic tools. This guide for a 2011 Regal BCM is a general overview; locations may vary slightly on other models.
- 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 most of these vehicles, the BCM is located in the driver’s side of the dashboard or in the driver’s side kick panel. You may need to remove a lower dash panel for access.
- 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 pre-programmed replacement BCM in the same location and securely reconnect all electrical harnesses. 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: windows, locks, lights, radio, and wipers. Start the vehicle to ensure it runs correctly.
Important Post-Installation Notes
While our programming handles the vast majority of functions, some vehicle systems may require a final handshake after installation. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct-fit, programmed solution for a range of GM vehicles. It is compatible with part numbers 13578420, 13577850, 13505326, 13500384, 13574844, 13504004, and 13504494. Please verify your part number and match it to the list below:
- 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 does the programming service work after I buy?
After your purchase, we will email you with detailed instructions and the shipping address to send your original BCM to us. Please ensure your contact information is correct at checkout. Once we receive your module, we clone the data to the replacement unit and ship it back to you, usually within 1-2 business days.
Is this truly plug-and-play?
Yes, for the vast majority of vehicle functions. Because we transfer all data from your original module, the replacement BCM is recognized by your car’s other computers. This means no key programming or VIN writing is needed. In some rare cases, a minor relearn procedure like for the airbag or brake pedal sensor may be required as noted above.
What if my original BCM is completely dead or not communicating?
Even if your BCM is failing, we can often still extract the necessary data from the memory chip. In the rare event that the data is completely corrupted and unreadable, we will contact you to discuss options, which may include a full refund.
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. Our cloning process transfers this data, so your existing keys will work perfectly with the new module.
Is there a core charge?
No, there is no core charge for this part. You can keep your original module after you receive the programmed replacement from us.