Tired of Chasing Electrical Gremlins in Your GM Vehicle?
If your 2011-2012 Buick LaCrosse is suffering from bizarre electrical issues—like flickering lights, malfunctioning power windows and locks, or a security system that prevents it from starting—you’ve likely met the culprit: a failing Body Control Module (BCM). As the central nervous system for your car’s electronics, when the BCM goes bad, it can cause a cascade of frustrating and hard-to-diagnose problems. Dealerships often quote a fortune for a replacement and programming. We offer a smarter, more affordable solution.
This is a fully tested BCM that comes programmed specifically for your vehicle. Our professional cloning service transfers all the critical data from your original BCM to this replacement unit. The result? A true plug-and-play module that restores full functionality without requiring any expensive trips to the dealer for programming. Simply send us your original module, and we’ll handle the rest, getting you back on the road quickly and confidently.
A Technician’s Notebook
I recently had a 2012 LaCrosse in the bay that was driving its owner crazy. The car would randomly refuse to start, the radio would cut out, and the interior lights had a mind of their own. The owner had already replaced the battery and checked the alternator. After hooking up the scan tool, I saw a slew of communication errors (U-codes) pointing to a network problem. In my 20+ years of experience, these ghost-like symptoms almost always trace back to the BCM. Instead of a costly new module and hours of programming, we used our cloning service. The customer sent us his faulty BCM, we transferred the data, and sent back a ready-to-install unit. The fix was immediate, saving the customer hundreds of dollars and a ton of frustration. This 2011-2012 LaCrosse BCM solution is the most reliable fix for these exact issues.
Common Signs of a Failing GM BCM
A faulty Body Control Module can manifest in various ways. If you’re experiencing any of the following, your BCM is the likely cause:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system/anti-theft light is on, preventing the car from starting.
- ✔ Intermittent dashboard warning lights with no apparent cause.
- ✔ Communication error codes, such as U0100, U0140, or other U-series DTCs.
- ✔ Problems with the key fob or remote entry system.
Your Straightforward Installation Guide
Once you receive your programmed module from us, installation is a breeze. Our cloning service makes this a simple component swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most 2011-2012 LaCrosse models, the BCM is located in the driver’s side (LH) kick panel area. Consult a service manual for your specific vehicle if you’re unsure.
- Swap the Modules: Carefully disconnect the wiring harnesses from your old BCM and remove it. Mount the new, programmed BCM in its place and securely reconnect all wiring harnesses.
- Power Up: Reconnect the negative battery terminal.
- Final Check: Start the vehicle and test all body functions—windows, locks, lights, wipers, and radio—to confirm everything is working as it should.
Important Post-Installation Notes
While our goal is a seamless plug-and-play experience, some vehicle systems may require a quick sync-up. If your airbag light illuminates, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, some models may require a ‘Brake Pedal Position Relearn’ to ensure proper brake light and traction control operation. These are standard procedures that any qualified shop can perform if needed.
Verified Vehicle Compatibility
This 2011-2012 LaCrosse BCM service is compatible with a wide range of GM vehicles and part numbers. Please verify your part number is on this list. This module is a direct replacement for part numbers: 13579004, 13580198, 13582396, 13583450, 13586856, 13582688, 13586278, 13501737, 13501739, 13577924, 13580773, and 13583451.
- Buick LaCrosse: 2011, 2012
- Buick Regal: 2011
- Cadillac SRX: 2011, 2012
- Chevrolet Camaro: 2011 (Convertible)
- Chevrolet Cruze: 2012
- Chevrolet Equinox: 2011
- Chevrolet Orlando: 2012
- Chevrolet Volt: 2011, 2013
- GMC Terrain: 2011
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. Our technicians will then extract the vehicle-specific data and transfer it to the replacement module. We then ship the programmed module back to you, ready for installation.
Do I need to program this BCM after I receive it?
No. The module arrives pre-programmed with your car’s data. This eliminates the need for any dealer programming, making it a plug-and-play installation.
What if my airbag light comes on after installation?
In some cases, the new BCM needs to be synced with the airbag system. This is done with a professional scan tool using the ‘Setup SDM Primary Key in BCM’ function. Any professional mechanic can perform this quick procedure.
Is there a core charge for my old BCM?
No, there is no core charge. We only need your original module for the data transfer service. You can keep your original module after the service is complete.
Where is the BCM located on a 2012 Buick LaCrosse?
On the 2011-2012 LaCrosse, the Body Control Module is typically found behind the kick panel on the driver’s side (left-hand side) of the dashboard.
Will this fix my car’s no-start problem?
If your no-start issue is caused by the anti-theft system being triggered by a faulty BCM, then yes, this programmed module will resolve the problem by restoring proper communication.