Is Your Buick LaCrosse Experiencing Strange Electrical Problems?
The Body Control Module, or BCM, is the central nervous system for your vehicle’s electronic accessories. It manages everything from your power windows and door locks to the interior lights, security system, and even turn signals. When the BCM in your 2012-2013 Buick LaCrosse begins to fail, it can cause a cascade of confusing and frustrating issues that can seem unrelated. You might find your lights flickering, your key fob not working, or warning lights appearing on your dash for no reason. These aren’t just annoyances; they can be serious safety concerns.
From the Diagnostic Bay
We recently had a 2012 Buick Regal (which uses the same BCM) come into the shop with a list of bizarre symptoms. The owner said the radio would turn on by itself, the dome lights would stay on, and the power locks worked intermittently. He had already replaced the battery and checked all the fuses, but the problems persisted. A diagnostic scan pointed towards a communication failure with the BCM. The dealership quoted him over a thousand dollars for a new module plus several hours of labor for programming. Instead, we used our cloning service. We transferred the data from his original, faulty BCM to this replacement unit. He had it back in his car the next day, fully functional, for a fraction of the cost and without the dealership hassle.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The vehicle’s security system malfunctioning or preventing the car from starting.
- ✔ The key fob failing to lock or unlock the doors.
- ✔ False warning lights appearing on the instrument cluster (e.g., airbag, ABS).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers activating on their own or not responding to the switch.
The Simple, Cost-Effective Solution: A Programmed 2012-2013 LaCrosse BCM
Replacing a BCM isn’t as simple as swapping the part. A new module from the dealership is a blank slate; it must be professionally programmed to your vehicle’s specific VIN and options, a process that is both costly and time-consuming. Our unique programming service eliminates this step entirely. We take the vital data from your original BCM and transfer it directly to this replacement module. The result is a true plug-and-play component that is ready for installation the moment you receive it.
How Our Programming Service Works:
- ✔ Place Your Order: Complete your purchase through our secure checkout.
- ✔ We’ll Contact You: Our team will reach out with simple instructions and a shipping address for you to send your original BCM to us.
- ✔ Send Us Your Module: Carefully package and ship your original BCM to our facility.
- ✔ We Program the Replacement: Upon arrival, our technicians will professionally clone all necessary data from your old module to the replacement unit.
- ✔ We Ship It Back: We ship your ready-to-install BCM back to you, typically within 1-2 business days, and provide you with tracking information.
Post-Installation Procedures
While our goal is a seamless plug-and-play experience, some vehicles may require minor recalibration procedures after installation. These are typically simple and can sometimes be performed without special tools, though a professional scan tool is recommended for best results.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the systems. This is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light and traction control operation.
Please note: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Vehicle Fitment and Part Numbers
This BCM is a direct replacement for several part numbers and fits a wide range of GM vehicles. Please verify that your vehicle and part number are listed below.
Compatible Part Numbers: 13580696, 123589093, 13588446, 13584692, 13583542
Compatible Models:
- 2012 Buick Regal
- 2012 GMC Terrain
- 2013 Chevrolet Spark
- 2012-2014 Chevrolet Camaro
- 2012 GMC Equinox
- 2012 Cadillac SRX (with ID 13580696)
- 2012 Buick Verano
- 2012 Chevrolet Volt
- 2012-2013 Buick LaCrosse
Frequently Asked Questions
How does this cloning service work?
You send us your original BCM. We use specialized equipment to extract the vehicle-specific programming, including the VIN and security information, and flash it onto the replacement module. This makes the new module an exact electronic copy of your original, ensuring it works perfectly with your car’s other systems.
Is this part truly plug-and-play?
Yes, in over 95% of cases. Because we clone your original data, the vehicle recognizes the replacement module as its own, eliminating the need for dealership programming. In rare cases, a simple relearn procedure like for the brake pedal position sensor may be required.
What happens if I don’t send in my original BCM?
This service cannot be completed without your original module. The data contained within it is essential for programming the replacement. We will hold your order until your original part is received.
Do I need any special tools to install this?
Installation typically requires only basic hand tools to access the BCM, which is usually located under the dashboard. No programming tools are needed.
Will this fix all of my car’s electrical problems?
This module will correct any issues directly caused by a faulty BCM. If you have other underlying electrical problems, such as a bad ground or a wiring short, those will need to be addressed separately. A proper diagnosis is always recommended before ordering.