Tired of Unpredictable Electrical Problems in Your Cadillac?
Is your 2014-2016 Cadillac ELR acting possessed? One day the power windows don’t work, the next the security light is flashing, or the interior lights are flickering for no reason. These frustrating and seemingly random issues often point to one central culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, the BCM manages everything from your door locks and lighting to the anti-theft system. When it starts to fail, it can create a cascade of baffling problems that are difficult to diagnose.
This isn’t just an inconvenience; it can affect your vehicle’s security and functionality. Instead of facing a costly trip to the dealership for a new module, expensive programming fees, and vehicle downtime, we offer a straightforward and reliable solution. Our service provides a replacement 2014-2016 ELR Body Control Module that is pre-programmed with your vehicle’s exact data, making the installation process as simple as possible.
A Technician’s Notebook: The Case of the Confused Cadillac
A customer brought in a 2015 SRX (which uses this same BCM family) with a wild list of complaints: the radio would randomly turn off, the liftgate wouldn’t open with the fob, and the dash would occasionally light up like a Christmas tree. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple ‘Loss of Communication’ codes (U-codes) with various modules. This is a classic sign. Instead of chasing individual component failures, I went straight for the BCM. A failing BCM can’t properly direct traffic on the car’s data network, leading to these phantom issues. By cloning the original BCM’s data to a new unit, we restored all functions perfectly without any extra programming, saving the customer hundreds in diagnostic and dealership fees.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty Body Control Module is the likely cause. In my 20+ years of experience, these are the most frequent symptoms I’ve seen tied to BCM failure:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ The security system engaging randomly or the vehicle failing to start due to a false anti-theft alert.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Multiple unrelated warning lights appearing on the instrument cluster.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or B1001.
Our Simple Plug-and-Play Process
We’ve designed our service to be the most convenient solution on the market. After you place your order, we will contact you with instructions to ship your original BCM to our facility. Once we receive it, our expert technicians will transfer all the critical information—including VIN, mileage, and key data—to a replacement module. We then ship the fully programmed unit back to you, typically within 24-48 hours. The result is a true plug-and-play part that restores your vehicle’s function without needing a trip to the dealer.
A Straightforward Guide to Installation
Installing your programmed 2014-2016 ELR Body Control Module is a manageable task for a DIY enthusiast. The location of the BCM can vary, so be sure to check your specific model’s location in our fitment list below.
- Safety First: Always 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 ELR, the Body Control Module is typically found in the right-hand (passenger side) cowl area. For other vehicles, refer to the fitment list. You may need to remove a kick panel or trim piece to access it.
- Disconnect and Remove: Carefully 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 new, pre-programmed BCM in the same location and securely reconnect all the electrical connectors. Ensure they click into place.
- Reconnect and Test: Reinstall any trim panels you removed and reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, etc.—to confirm the repair.
Important Post-Installation Notes
While our programming service handles the vast majority of the work, some GM vehicles may require simple relearn procedures after the battery has been disconnected or a new module is installed.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure correct brake light operation and stability control performance.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct fit for modules with part numbers 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, or 13594564. It is compatible with the following vehicles and options:
- 2014-2016 Cadillac ELR: Body Control (BCM); (RH cowl)
- 2016 Cadillac ELR: Communication; (RH engine compartment)
- 2014-2016 Cadillac SRX: Body Control (BCM); (LH dash)
- 2014-2015 Buick LaCrosse: Body Control (BCM); (LH kick panel)
- 2016 Buick LaCrosse: Body Control (BCM); (LH kick panel), ID 13580698 or 13594564
- 2014-2017 Buick Regal: Body Control (BCM); (LH dash)
- 2014-2015 Chevrolet Malibu: Body Control (BCM); (LH kick panel)
- 2016 Chevrolet Malibu: Body Control (BCM); VIN 1 (4th digit, Limited), (LH kick panel)
- 2014-2015 Chevrolet Volt: Body Control (BCM); (RH engine compartment)
- 2014-2015 Chevrolet Camaro: Body Control (BCM); (RH dash)
- 2014-2016 Chevrolet Spark: Body Control (BCM); (left lower a-pillar), electric model (EV)
Frequently Asked Questions
2014-2016 ELR Body Control Module
Is this a guaranteed fix for my car’s electrical problems?
This service corrects issues directly caused by a failing . If your vehicle exhibits the common symptoms we’ve listed, there is a very high probability this will resolve the problems. However, proper diagnosis is always recommended.