Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your 2012-2013 Buick LaCrosse or another compatible GM vehicle? Intermittent power windows, flickering interior lights, a security system that acts up, or even a car that refuses to start can often be traced back to one component: a failing Body Control Module (BCM). As the central computer for your car’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating guessing game. Instead of facing a costly trip to the dealership for diagnostics and programming, we offer a streamlined, reliable solution.
This is a professionally programmed BCM, part number 13580696. Our unique service involves cloning the essential data from your original, failing BCM directly onto this replacement unit. The result is a true plug-and-play module that is ready for installation the moment you receive it, restoring full functionality without the need for expensive scan tools or dealership intervention. We make the process simple: after your purchase, we’ll provide instructions for shipping your original module to our facility. Once we receive it, our technicians will perform the data transfer and ship your ready-to-install replacement BCM back to you promptly.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system or keyless entry remote works intermittently or not at all.
- ✔ Unexplained battery drain that leaves you with a dead battery overnight.
- ✔ Warning lights on the dashboard, such as the airbag or security light, that won’t turn off.
- ✔ Communication error codes (U-codes) when scanned with a diagnostic tool.
- ✔ The vehicle may not start, or the starter may not engage, even with a good battery.
From the Diagnostic Bay
I remember a 2012 LaCrosse that came into my shop with a laundry list of what the owner called “automotive poltergeists.” The dome light would flicker while driving, the driver’s window would randomly stop working, and twice the car had refused to start. The owner had already replaced the battery to no avail. After hooking up my scan tool, I found a series of communication codes pointing to the BCM. These modules are the traffic cops for dozens of electronic systems. When they fail, chaos ensues. Instead of a new, unprogrammed module that would require hours of setup at the dealer, we used a cloned unit. The customer sent us their old BCM, we transferred the data, and sent back the replacement. The install took 20 minutes, and every single ghost in the machine was gone. It’s a testament to how effective this service is for a complex problem.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the 2012-2013 Buick LaCrosse, the BCM is typically found in the driver’s side footwell, behind the left kick panel. For other models, its location may vary (e.g., behind the dash or in the engine compartment).
- ✔ Remove the Original Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the Replacement: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, radio, and wipers—to confirm the repair was successful.
Important Post-Installation Information
In some cases, additional vehicle-specific procedures may be required after installation. While our programming handles the critical data, certain safety systems may need to be re-synced.
- Airbag System Sync: If the 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: Some models may require a brake pedal position sensor recalibration to ensure the brake lights and traction control system function correctly.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician for your specific make and model.
Verified Vehicle Compatibility
This BCM is a direct fit for units with part numbers 13580696, 123589093, 13588446, 13584692, or 13583542. It is compatible with the following vehicles:
- Buick LaCrosse: 2012 (ID 13580696), 2013 – (LH kick panel)
- Buick Regal: 2012 – (LH dash)
- Buick Verano: 2012 – (below center of dash)
- Cadillac SRX: 2012 – (LH dash, ID 13580696)
- Chevrolet Camaro: 2012-2013, 2014 (Coupe) – (RH dash)
- Chevrolet Equinox: 2012 – (LH side dash)
- Chevrolet Spark: 2013 – (left lower a-pillar)
- Chevrolet Volt: 2012 – (RH engine compartment)
- GMC Terrain: 2012 – (LH side dash)
Frequently Asked Questions
How does the programming service work?
It’s simple. After you place your order, we will contact you with instructions to ship your original BCM to us. We then copy the vehicle-specific data from your module to the replacement unit and ship it back to you, ready for installation.
Do I need to get this 2012-2013 LaCrosse BCM programmed by a dealer?
No. The main benefit of our service is that the module arrives at your door already programmed. This completely eliminates the need for dealership programming, saving you time and money.
What if my original part number is not 13580696?
This module is also a direct replacement for part numbers 123589093, 13588446, 13584692, and 13583542. As long as your part number is on this list, it is compatible.
Is there a core charge or do I need to send my old part back?
You must send your original BCM to us for the data cloning service. However, there is no separate core charge, and we do not require you to leave the old part with us permanently. You can keep your original module after the service.
What happens if the airbag light comes on after I install it?
This is a possibility on some models. It simply means the new BCM needs to be synced with the airbag control module. A procedure called ‘Setup SDM Primary Key in BCM’ can be performed by a shop with a professional-grade diagnostic tool to resolve this.