Restore Your Cadillac’s Electrical Sanity
Are you chasing electrical gremlins in your 2014-2016 Cadillac ELR? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). As a technician with over two decades of diagnostic experience, I’ve seen how a faulty BCM can turn a sophisticated vehicle into a source of constant frustration. It’s the central command center for your car’s body electronics, and when it fails, chaos ensues. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
Forget the exorbitant dealership quotes and the hassle of programming a new module from scratch. We offer a straightforward and reliable solution: a replacement BCM programmed with the exact data from your original unit. This cloning service ensures a seamless, plug-and-play installation. You simply send us your faulty BCM, we transfer all the critical vehicle-specific information to a fully functional replacement, and ship it right back to you, ready to install. No key reprogramming, no extra trips to the mechanic—just the fix you need.
A Technician’s Notebook: The Intermittent ELR Ghost
I once had a 2015 ELR in my bay that was driving the owner crazy. The radio would randomly shut off, the passenger window wouldn’t respond, and occasionally the alarm would trigger for no reason. The owner had already been to two other shops that couldn’t find the issue because the problems were so intermittent. After checking the wiring diagrams and running network tests, I noticed communication dropouts pointing towards the BCM. On these complex vehicles, a failing BCM doesn’t always throw a hard code. By providing a cloned module, we got the customer’s car back to 100% functionality without the weeks of waiting and high cost associated with a dealer-ordered part.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The anti-theft or security system acting up, potentially causing a no-start condition.
- ✔ Dashboard warning lights appearing randomly (e.g., ABS, Airbag, Traction Control).
- ✔ Communication error codes, such as U0140 (Lost Communication With Body Control Module).
- ✔ Key fobs that are no longer recognized by the vehicle.
A Straightforward Guide to Your BCM Swap
Installing your pre-programmed module is a direct replacement. While professional installation is always recommended, a skilled DIYer can perform the swap. For the 2014-2016 ELR, the BCM is located in the right-hand cowl area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the ELR, you will find the BCM located on the right-hand side of the vehicle, in the cowl area. Access may require removing a trim panel.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors to their correct ports.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to confirm proper operation.
Important Post-Installation Notes
Our programming service handles the heavy lifting, but some vehicle systems may require a quick sync-up after installation:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag and body modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure brake lights and stability control systems function correctly. This is also performed with a diagnostic tool.
Verified Vehicle Compatibility
This module is a direct fit for a wide range of GM vehicles. Please verify your part number and vehicle model from the list below. This unit is compatible with the following part numbers: 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, 13594564.
- Cadillac ELR: 2014-2016 (Body Control or Communication Module)
- Buick LaCrosse: 2014-2016
- Buick Regal: 2014-2017
- Cadillac SRX: 2014-2016
- Chevrolet Camaro: 2014-2015
- Chevrolet Malibu: 2014-2015, 2016 (Limited)
- Chevrolet Spark: 2014-2016 (EV Model)
- Chevrolet Volt: 2014-2015
Frequently Asked Questions
How does the mail-in 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, our technicians will transfer its data to the replacement unit and ship it back to you, usually within 1-2 business days.
Do I need to send in my keys?
No. Because we clone the data from your original module, the replacement unit will recognize your existing keys automatically. This saves you the time and expense of key reprogramming.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module. Our service price is for the replacement part and the programming service combined.
Will my vehicle’s mileage be correct after installation?
Yes. The vehicle’s mileage and VIN are part of the data we transfer from your original BCM. Your odometer reading will remain accurate.
What if the airbag light comes on after I install it?
This can happen occasionally. It simply means the BCM and the airbag module (SDM) need to be re-synced. A qualified mechanic with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.