Restore Your Cadillac’s Electrical System with a Hassle-Free Solution
If you’re dealing with bizarre electrical issues in your 2014-2016 Cadillac ELR—like flickering lights, malfunctioning power windows, or a car that refuses to start—the Body Control Module (BCM) is often the culprit. As the central nervous system for your vehicle’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated problems. For over 20 years, I’ve seen these modules fail, leaving owners confused and facing expensive dealership repairs. That’s why we offer a straightforward, reliable alternative.
This is not just a replacement part; it’s a complete, plug-and-play solution. We provide a fully functional Body Control Module that is professionally programmed with the exact data from your original unit. This cloning service means you can skip the costly and time-consuming trip to the dealership for programming. The process is simple: you send us your faulty BCM, we transfer all the critical vehicle-specific information to this replacement module, and ship it right back to you, ready for installation. This service ensures seamless integration with your ELR’s existing systems, including the immobilizer and key fobs.
Is Your Cadillac ELR Showing These Signs?
- ✔ Intermittent or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors operating erratically or not at all.
- ✔ The security system engaging randomly or preventing the car from starting.
- ✔ Warning lights on the dash for various systems with no clear cause.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140 (Lost Communication With Body Control Module), B1325 (Device Power Circuit Voltage Below Threshold), or other communication errors.
- ✔ A complete no-start condition where the ignition seems dead.
From the Diagnostic Bay: The Case of the Phantom Drain
A customer brought in a 2015 ELR with a battery that would die overnight. We tested the battery and alternator—both were fine. I performed a parasitic draw test and found a significant current pull even after the car was off for 30 minutes. After pulling fuses one by one, the draw disappeared when I pulled the BCM fuse. The BCM wasn’t properly shutting down internal relays, creating a constant power drain. A cloned 2014-2016 ELR Body Control Module like this one solved the issue instantly, saving the customer from replacing a perfectly good battery and the headache of a dead car every morning.
Your Straightforward BCM Swap Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the 2014-2016 Cadillac ELR, the Body Control Module is typically located in the right-hand cowl area. Consult your service manual for the exact position and access instructions.
- ✔ Remove the Old Module: Carefully disconnect all electrical connectors from the BCM. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely fasten it. Reconnect all electrical connectors, ensuring they click firmly into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm proper operation. Note the post-installation procedures below, as some systems may require recalibration.
Important Post-Installation Information
While our programming service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control functionality.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician for your specific model’s requirements.
Verified Compatibility for Your Vehicle
This module is a direct replacement for part number 13578458 and is also compatible with the following part numbers: 13580698, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, and 13594564. It is confirmed to fit the following models:
- 2014-2016 Cadillac ELR (Body Control, RH cowl)
- 2014-2015 Buick LaCrosse (Body Control, LH kick panel)
- 2016 Buick LaCrosse (Body Control, LH kick panel, ID 13580698 or 13594564)
- 2014-2017 Buick Regal (Body Control, LH dash)
- 2014-2015 Chevrolet Malibu (Body Control, LH kick panel)
- 2016 Chevrolet Malibu (Body Control, VIN 1, Limited, LH kick panel)
- 2014-2015 Chevrolet Volt (Body Control, RH engine compartment)
- 2014-2015 Chevrolet Camaro (Body Control, RH dash)
- 2014-2016 Cadillac SRX (Body Control, LH dash)
- 2014-2016 Chevrolet Spark (Body Control, EV model, left lower a-pillar)
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.
Do I need to send my keys?
No, you do not need to send your keys. Our cloning process transfers all the necessary security information from your old module, so your existing keys will work seamlessly with the new BCM upon installation.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the installation is straightforward. It involves disconnecting the battery, locating the BCM in the right-hand cowl, and swapping the modules. However, if you are not comfortable working with vehicle electronics, we recommend professional installation.
What if my original BCM is completely dead or unreadable?
In most cases, even with significant internal failure, we can still retrieve the necessary data. If your module has suffered extreme damage (e.g., fire or severe water corrosion), please contact us before ordering to discuss options.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after you’ve sent it to us for the data transfer.
What happens if my airbag light comes on after installation?
This is a known possibility. The airbag system (SDM) may need to be electronically re-synced with the new BCM using a professional diagnostic tool. This is a simple procedure for any qualified repair shop.