Restore Your Vehicle’s Functionality with a Hassle-Free BCM Solution
Are you dealing with baffling electrical issues in your Cadillac or GM vehicle? Flickering lights, unresponsive power windows and locks, or strange warning messages on your dash are classic signs of a failing Body Control Module (BCM). In my 20+ years of automotive diagnostics, I’ve seen how a faulty BCM can turn a luxury vehicle into a source of constant frustration. The dealership solution often involves a brand-new module and several hours of expensive programming. We offer a smarter, more efficient alternative.
This is a comprehensive cloning service for your vehicle’s BCM. Instead of selling you a blank module that requires dealer intervention, we transfer the exact data from your original BCM to this fully tested replacement unit. This process ensures that all your vehicle’s specific settings, security information (VIN, key data), and operational parameters are perfectly preserved. The result is a true plug-and-play component that restores your car’s electronic systems without the need for additional programming fees. By using your original data, we eliminate compatibility guesswork and provide a reliable, cost-effective repair.
From the Diagnostic Bay: The Case of the Ghostly Gremlins
I remember a 2013 Cadillac XTS that came into the shop with a list of bizarre, intermittent problems. The interior lights would stay on, the radio would randomly shut off, and the driver’s side window worked only when it wanted to. The owner had already spent hundreds on diagnostics at another shop with no success. After hooking up my scanner, I saw a flurry of U-codes, specifically U0140 (Lost Communication With Body Control Module). This pointed directly to a failing BCM. Instead of a costly new unit, we performed this exact cloning service. Within days, the customer had their programmed module back. They installed it in under 30 minutes, and every single electrical gremlin was gone. It’s a perfect example of how targeting the root cause with the right part saves time, money, and headaches.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. This part is the central hub for your car’s body electronics, and when it fails, the symptoms can be widespread.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior dome lights or exterior lighting (headlights, taillights) malfunctioning.
- ✔ The security system acting up, or the key fob being unresponsive.
- ✔ Warning lights for various systems (Airbag, ABS, Traction Control) appearing on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or B-series codes pointing to body electronic failures.
- ✔ In severe cases, a no-start condition where the BCM fails to recognize the key or enable the starting circuit.
A Straightforward Guide to Installation
Our cloning service makes the physical replacement simple. Once you receive the programmed module from us, follow these general steps. The location of the BCM for the 2013 XTS BCM is on the left front hinge pillar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: Find the Body Control Module. Its location varies by model (see fitment list), but for the XTS, it’s inside the cabin near the driver’s side A-pillar/hinge area.
- Disconnect and Remove: Carefully unplug all electrical connectors from your original BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the Replacement: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors to their correct ports.
- Power Up: Reconnect the negative battery terminal.
- Final Checks: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair. Address any post-installation procedures if necessary.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles, matching part numbers 13586589, 13589093, and 13580689. Please verify your vehicle’s model and the BCM’s location before ordering.
- 2013 Cadillac ATS: Body Control (BCM); (on firewall)
- 2013 Cadillac XTS: Body Control (BCM); (left front hinge pillar)
- 2013-2014 Chevrolet Sonic: Body Control (BCM); (RH rear quarter panel)
- 2014 Chevrolet Impala: Body Control (BCM); VIN 1 (4th digit, New Style), (LH dash)
Important Post-Installation Information
While our cloning service handles all the primary programming, 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 BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure correct brake light and traction control operation.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Frequently Asked Questions
How does the cloning 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 unique data and transfer it to the replacement module. We then ship the programmed, ready-to-install BCM back to you.
Do I need to get this programmed by a dealer?
No. The main benefit of our service is that the module arrives at your door already programmed with your car’s specific data. This eliminates the need for expensive dealer programming.
Is there a core charge?
No, there is no core charge for this item. You can keep your original module after you send it to us for the data transfer.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM has failed, we can still extract the necessary data. Please contact us with your specific situation, and our technicians can advise on the likelihood of a successful data transfer.
What information do you need from me?
After your purchase, we will contact you to arrange shipping for your original module. Please ensure your contact information (phone and email) is correct in your order details so we can reach you promptly.