Are you battling frustrating electrical issues in your Cadillac, Chevy, or Buick? When your vehicle’s lights, windows, or security system start acting erratically, the Body Control Module (BCM) is often the culprit. As the central command center for your car’s body electronics, a failing BCM can turn your daily drive into a nightmare. This isn’t just an inconvenience; it can affect vehicle security and safety systems. Forget the expensive trip to the dealership and the hassle of programming a new module from scratch. We offer a reliable, streamlined solution.
This listing is for a replacement Body Control Module, part number 13589093, that comes pre-programmed specifically for your vehicle. Our professional cloning service transfers the critical data from your original BCM to this replacement unit. The process is simple: after your purchase, we’ll provide instructions for you to ship your original module to our facility. Once we receive it, our technicians will perform the data transfer and ship your new, ready-to-install BCM back to you, typically within 24-48 hours. This ensures a perfect match to your vehicle’s options and security information, making the installation truly plug-and-play.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2013 Cadillac ATS that came into the shop with a list of bizarre symptoms. The owner said the dome lights would stay on, the radio would randomly shut off, and the power locks worked intermittently. He’d already replaced the battery, thinking it was a simple voltage issue. After connecting my scan tool, I saw a slew of communication error codes (U-codes) pointing to the BCM. A failing BCM can create these ‘ghost’ problems that seem unrelated. By providing a properly programmed 2013 ATS BCM, we restored all functions and saved the customer hundreds compared to the dealership’s quote for a new, unprogrammed module and labor.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system or keyless entry fails to operate correctly.
- ✔ Warning lights appearing on the dashboard for seemingly no reason.
- ✔ Communication Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or B1001.
- ✔ Intermittent starting problems or a complete no-start condition.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: The location varies by model. For the 2013 ATS, it’s typically on the firewall. For other models, check the fitment list below for its location.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Then, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount the new, programmed BCM in the same location and securely re-attach all electrical connectors. Ensure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair.
After installation, some vehicles may require additional relearn procedures. For instance, if your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary to ensure proper brake light and traction control operation. Always consult a factory service manual for vehicle-specific instructions.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement and is compatible with the following vehicles and part numbers. Please verify your original part number is on this list before ordering. This module is an exact replacement for part numbers 13586589, 13589093, and 13580689.
- 2013 Cadillac ATS: Body Control (BCM); (located on the firewall)
- 2013 Cadillac XTS: Body Control (BCM); (located on the left front hinge pillar)
- 2013-2014 Chevrolet Sonic: Body Control (BCM); (located in the RH rear quarter panel)
- 2014 Chevrolet Impala: Body Control (BCM); (for VIN 1, 4th digit, New Style models, located on the LH dash)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. Our service includes programming (cloning) from your original module. The BCM you receive will be ready to install right out of the box, saving you time and money.
What is the process for the cloning service?
After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, we transfer the data to the replacement unit and ship it back to you with tracking information.
What happens if my original BCM is not communicating?
In most cases, even with significant internal faults, we can still extract the necessary data for cloning. If your module is completely unreadable (e.g., due to severe water or fire damage), we will contact you to discuss options.
Is there a core charge for my old BCM?
No, there is no core charge. After we clone the data, we will return your original BCM along with the newly programmed replacement.
What tools are required for installation?
Basic hand tools like a socket set or screwdriver are usually all that’s needed to physically replace the module. No special programming tools are required for installation since we handle all the programming beforehand.