Are you battling bizarre electrical issues in your Buick LaCrosse or other GM vehicle? Flickering lights, malfunctioning power windows, a radio with a mind of its own, or a security system that randomly activates are classic signs of a failing Body Control Module (BCM). As the central command center for your car’s body electronics, a faulty BCM can turn your daily drive into a frustrating ordeal. I’ve seen it hundreds of times in my shopāa vehicle comes in with a list of seemingly unrelated electrical gremlins, and the BCM is the culprit.
Forget expensive dealership visits and the headache of programming a new module. We offer a simple, reliable solution. This listing is for a replacement BCM that is professionally programmed by cloning the data from your original unit. This ensures a 100% seamless match to your vehicle’s specific features and security information. You simply send us your original BCM, and we handle the complex data transfer. We’ll ship you back a plug-and-play replacement, ready for installation right out of the box.
Case Study: A Tricky Diagnosis
A customer brought in a 2012 Buick LaCrosse with a baffling problem: the interior lights would stay on, draining the battery overnight, and the power door locks worked intermittently. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found several communication loss codes (U-codes) pointing to the BCM. Instead of a costly new module and hours of programming at the dealer, we used our cloning service. We transferred the data from his failing BCM to a replacement unit. The next day, the customer installed it himself in under 30 minutes. All the electrical gremlins were gone. Itās a perfect example of how this service saves time, money, and a lot of diagnostic headaches.
Is Your Vehicle Showing These Telltale Symptoms?
- ā Power windows, locks, or mirrors operating erratically or not at all.
- ā Interior or exterior lights staying on or not turning on.
- ā The security system or alarm being falsely triggered.
- ā Instrument cluster warning lights (like ABS or Airbag) appearing for no reason.
- ā Communication error codes, such as U0100, U0140, or other U-series DTCs.
- ā The engine won’t crank or start due to a security system fault (anti-theft).
Your Straightforward BCM Installation Guide
- ā Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ā Locate the BCM: On the 2012-2013 LaCrosse, the BCM is typically found in the driver’s side kick panel area, to the left of the pedals. Location varies on other models (see fitment list).
- ā Remove Trim Panels: Carefully remove any plastic trim or kick panels necessary to access the module.
- ā Disconnect and Remove: 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.
- ā Install the Replacement: Mount your pre-programmed replacement BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock in place.
- ā Final Steps: Re-install the trim panels and reconnect the negative battery terminal. Start the vehicle and test all functions (lights, windows, locks, etc.).
Important Post-Installation Information
Because this is a direct clone of your original module, most vehicles will not require any additional procedures. However, in some cases, you may need to perform a simple relearn process. This is especially true for the airbag or brake systems.
- Airbag System Sync: If your airbag warning light is on 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 relearn to ensure proper brake light and traction control operation.
This module is a direct replacement for part numbers: 13580696, 123589093, 13588446, 13584692, and 13583542.
Verified Compatibility for Your Vehicle
This BCM is guaranteed to fit the following vehicles. Please verify the location described for your specific model.
- 2012-2013 Buick LaCrosse: Body Control (BCM); (LH kick panel)
- 2012 Buick Regal: Body Control (BCM); (LH dash)
- 2012 Buick Verano: Body Control (BCM); (below center of dash)
- 2012-2013 Chevrolet Camaro: Body Control (BCM); (RH dash)
- 2014 Chevrolet Camaro: Body Control (BCM); (RH dash), Cpe
- 2012 Chevrolet Equinox: Body Control (BCM); (LH side dash), body control
- 2013 Chevrolet Spark: Body Control (BCM); (left lower a-pillar)
- 2012 Chevrolet Volt: Body Control (BCM); (RH engine compartment)
- 2012 Cadillac SRX: Body Control (BCM); (LH dash), ID 13580696
- 2012 GMC Terrain: Body Control (BCM); (LH side dash), body control
Frequently Asked Questions
How does the programming service work?
After you purchase, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and flash it onto the replacement module. We then ship the programmed module back to you, typically within 1-2 business days.
Is this truly plug-and-play?
Yes, for over 99% of installations. Because we are cloning your original data, the replacement module is already configured for your car’s VIN, security system, and options. This eliminates the need for expensive programming by a dealer.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is not functioning in the vehicle, we can still extract the necessary data on our benchtop equipment. Please contact us with your specific situation if you have concerns about your module’s condition.
Do I need to return my old BCM as a core?
No core charge is required. You only need to send us your original module for the data cloning service. You do not need to send it back after you receive the replacement.
Will this fix my specific problem?
This module will correct issues directly caused by a faulty BCM. While the symptoms we’ve listed are common, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before ordering.