Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
If you’re dealing with bizarre and frustrating electrical issues in your Buick LaCrosse or other compatible GM vehicle, you’re not alone. Flickering dashboard lights, malfunctioning power windows, a security system that acts up, or even a car that refuses to start can often be traced back to a single component: a failing Body Control Module (BCM). As the central computer for your car’s comfort and convenience features, its failure can create a cascade of problems. This isn’t just an annoyance; it can affect your vehicle’s security and basic functions.
Forget the expensive dealership visits and the complexities of programming a new module from scratch. We offer a straightforward and reliable solution. By purchasing this service, you’ll receive a fully functional replacement 2014-2016 LaCrosse BCM that is programmed with your vehicle’s original data. The process is simple: you send us your original BCM, we transfer all the critical information (like VIN, mileage, and key data) to this replacement unit, and ship it back to you ready for installation. This cloning service makes the replacement process as close to plug-and-play as possible, saving you significant time and money.
Common Signs of a Failing BCM
A faulty BCM can manifest in numerous ways, often mimicking other problems. In my 20+ years of diagnostics, I’ve seen these modules cause some of the most confusing symptoms. Here’s what to look for:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system or alarm sounding randomly or preventing the car from starting.
- ✔ Dashboard warning lights illuminating for no apparent reason.
- ✔ Intermittent failure of the radio, climate controls, or instrument cluster.
- ✔ A no-start condition where the engine cranks but won’t turn over due to a security lockout.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140 (Lost Communication With Body Control Module).
From the Diagnostic Bay: A Malibu Mystery
A customer brought in a 2015 Malibu with a classic BCM failure story. The horn would honk randomly, the driver’s side window wouldn’t go down, and the key fob worked only intermittently. They had already replaced the battery and checked fuses, but the gremlins persisted. A scan showed a handful of U-codes pointing to a communication breakdown. Instead of putting them through the week-long wait and high cost of a dealership-sourced module, we performed a cloning service just like this one. We transferred the data from their failing BCM to a replacement unit. The customer had their car back the next day with all issues resolved—no additional programming needed. This is the power of a data-cloned module.
Your Straightforward BCM Installation Guide
Installing your newly programmed 2014-2016 LaCrosse BCM is a manageable task for a confident DIYer. The location varies slightly by model, but the general process is similar. Always ensure the vehicle is off and the battery is disconnected before you begin.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the 2014-2016 LaCrosse, the BCM is typically found behind the driver’s side (LH) kick panel. On other models, it may be in the dash, cowl, or engine compartment (see fitment list for details).
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off with a trim removal tool.
- 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.
- Install the New Module: Mount your programmed replacement BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm proper operation.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some GM vehicles may require a couple of quick sync procedures with a professional scan tool after installation:
- Airbag System Sync: If your airbag light is on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure proper brake light and traction control functionality.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Fitment For These GM Models
This BCM is a direct fit for a wide range of vehicles and is compatible with part numbers 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, and 13594564. Please verify your part number and vehicle options below.
- ✔ 2014-2016 Buick LaCrosse
- ✔ 2014-2017 Buick Regal
- ✔ 2014-2016 Cadillac ELR
- ✔ 2014-2016 Cadillac SRX
- ✔ 2014-2015 Chevrolet Camaro
- ✔ 2014-2016 Chevrolet Malibu (including 2016 Limited)
- ✔ 2014-2016 Chevrolet Spark EV
- ✔ 2014-2015 Chevrolet Volt
Frequently Asked Questions
How does the programming service work?
After you place your order, 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, ready for installation.
Is this a plug-and-play part?
Yes, because we clone the data from your original unit, this becomes a plug-and-play solution. It eliminates the need for expensive key programming or security relearns at a dealership. Some models may require minor post-install sync procedures as noted above.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary security information is stored within your original BCM, which is what we transfer to the new unit. Your existing keys will work seamlessly.
What is the turnaround time?
We typically program and ship your replacement module within 24-48 hours of receiving your original BCM. We will send you tracking information as soon as it ships.
Is there a core charge for my old BCM?
No, there is no core charge. We need your original module to perform the data transfer service, but you do not need to return it to us after you receive the programmed replacement.