Restore Full Functionality to Your Vehicle with a Pre-Programmed BCM
Are you dealing with baffling electrical issues in your 2012-2013 Buick LaCrosse? Flickering lights, malfunctioning power windows, a security system that acts up, or strange warning messages on your dash are more than just annoyances—they’re classic signs of a failing Body Control Module (BCM). As the central computer for your vehicle’s comfort and convenience features, a faulty BCM can make your car feel unreliable and unpredictable. In my 20+ years as a technician, I’ve seen how a bad BCM can cause a cascade of seemingly unrelated problems, leaving owners frustrated and confused.
This isn’t just a replacement part; it’s a comprehensive solution. We eliminate the biggest hurdle in BCM replacement: the expensive and time-consuming trip to the dealership for programming. Our service provides a fully programmed BCM, ready for installation. We achieve this by cloning the essential data from your original module. Simply send us your old BCM, and we’ll transfer its unique vehicle configuration, security keys, and option settings to this replacement unit. The result is a true plug-and-play component that restores your car’s electronics to factory-perfect operation without any additional programming fees.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2012 Buick Regal that came into my bay with a list of complaints that sounded like a poltergeist had taken over. The radio would switch stations on its own, the driver’s window wouldn’t go down, and the interior lights would stay on intermittently. The owner had already replaced the battery and checked all the fuses. A scan showed multiple U-codes (communication errors) pointing to the BCM. Instead of a costly new module and hours of programming, we used a cloning service just like this one. After we received the programmed replacement and installed it—a 30-minute job—every single issue was resolved. It’s a testament to how this service provides a precise, reliable fix for complex electronic problems.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit. This is especially true if you see communication-related Diagnostic Trouble Codes (DTCs) like U0140, U0155, or B1001.
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that won’t turn on or off correctly.
- ✔ The security system preventing the car from starting (anti-theft light flashing).
- ✔ Horn, wipers, or radio functioning intermittently or not at all.
- ✔ False warning lights or messages appearing on the instrument cluster.
- ✔ Problems with the keyless entry system.
Your Straightforward BCM Installation Guide
Installing your pre-programmed 2012-2013 LaCrosse BCM is a manageable task for a confident DIYer. Our cloning service handles the complex software side, so you can focus on the physical swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
- Locate the BCM: On the 2012-2013 LaCrosse, the BCM is typically found behind the driver’s side lower dash or kick panel. You may need to remove a plastic trim panel for access.
- Disconnect and Remove: Carefully unplug all 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, pre-programmed BCM in the same location. Reconnect all electrical connectors firmly until they click into place.
- Reconnect Power: Reattach the negative battery terminal. Your vehicle’s core functions should now be restored.
Important Post-Installation Steps
While our programming handles the heavy lifting, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system operate correctly.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Guaranteed Vehicle Compatibility
This BCM is a direct-fit replacement for several GM models and is compatible with multiple part numbers, including 13588446, 123589093, 13584692, and 13583542. It is guaranteed to fit the following vehicles:
- 2012-2013 Buick LaCrosse (LH kick panel)
- 2012 Buick Regal (LH dash)
- 2012 GMC Terrain (LH side dash)
- 2012 Chevrolet Equinox (LH side dash)
- 2012 Cadillac SRX (LH dash, ID 13580696)
- 2012-2013 Chevrolet Camaro (RH dash)
- 2014 Chevrolet Camaro (RH dash, Cpe)
- 2012 Buick Verano (below center of dash)
- 2012 Chevrolet Volt (RH engine compartment)
- 2013 Chevrolet Spark (left lower a-pillar)
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique data and transfer it to the replacement module. We then ship the ready-to-install BCM back to you.
Do I need to program this BCM after I receive it?
No. The module arrives pre-programmed with your vehicle’s specific information. In most cases, it is a plug-and-play installation, though some minor relearn procedures (like for the airbag or brake pedal sensor) may be necessary in certain situations.
Is there a core charge for my old BCM?
No, there is no core charge. We require your original module to perform the programming service, but you are not charged a separate core fee.
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 it has no communication whatsoever.
How long does the programming service take?
Our goal is to program and ship your replacement BCM within 1-2 business days of receiving your original module. We will send you tracking information as soon as it ships.