Restore Full Functionality to Your Cadillac
Are you battling frustrating electrical gremlins in your Cadillac or Chevrolet? Issues like flickering lights, malfunctioning power windows, an unresponsive key fob, or even a no-start condition can often be traced back to a single component: the Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a failing BCM can cause a cascade of confusing problems. This listing offers a straightforward, cost-effective solution: a replacement BCM, fully programmed using the data from your original module. This ensures a seamless, plug-and-play installation without the exorbitant costs and scheduling hassles of a dealership visit.
Our professional programming service makes this repair accessible for both seasoned mechanics and determined DIYers. The process is simple: after your purchase, we’ll provide instructions for you to ship your original BCM to our facility. Our technicians will then extract the critical vehicle-specific data and transfer it to this replacement unit. This cloning process ensures that the replacement BCM is a perfect digital match for your car, retaining all original settings and key programming. We then ship the ready-to-install module back to you, complete with tracking information. This is the most reliable way to get a working 2013 XTS BCM without needing advanced, dealer-level scan tools for setup.
A Technician’s Notebook
I remember a 2013 Cadillac XTS that came into the shop with a laundry list of bizarre symptoms. The radio would randomly shut off, the driver’s side window wouldn’t go down, and the passive entry system was completely dead. The owner had already replaced the battery and checked all the fuses. Diagnostics were tricky because the communication network codes were intermittent. After isolating other modules, we focused on the BCM. By monitoring data streams, we saw the BCM was erratically dropping communication with other components. A replacement, programmed module like this one resolved every single issue instantly. It’s a classic case of how a single failing computer can make an entire luxury car feel unreliable.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM could be the culprit. A failing module can often trigger communication-related Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or various B-codes.
- ✔ Power windows, locks, or mirrors operate intermittently or not at all.
- ✔ Interior or exterior lights flicker, stay on, or fail to turn on.
- ✔ The key fob or passive entry system stops working reliably.
- ✔ The vehicle’s security system engages randomly, preventing the car from starting.
- ✔ Dashboard warning lights appear for seemingly unrelated systems.
- ✔ Inconsistent operation of wipers, horn, or radio controls.
Your Straightforward Installation Guide
Once you receive the programmed module from us, installation is direct. The location of the BCM varies by model, so always confirm its position before starting.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On the 2013 XTS, it’s typically found on the left front hinge pillar. For other models, it may be on the firewall, behind the dash, or in a quarter panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Then, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount the replacement module in the exact same position and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test Functionality: Start the vehicle and test all body functions—windows, locks, lights, key fob, etc.—to confirm the repair was successful.
Important Post-Installation Information
While our programming service makes this a plug-and-play repair, some vehicle systems may require a recalibration or sync procedure after the BCM is replaced. Please be aware of the following possibilities:
- 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 BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to clear any traction control system warnings.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Compatibility for Your Vehicle
This BCM is a direct-fit replacement for several GM vehicles and part numbers. Please verify your vehicle and part number before ordering. This module is compatible with part numbers 13586589, 13589093, and 13580689.
- 2013 Cadillac ATS (Body Control Module located on the firewall)
- 2013 Cadillac XTS (Body Control Module located on the left front hinge pillar)
- 2013-2014 Chevrolet Sonic (Body Control Module located in the RH rear quarter panel)
- 2014 Chevrolet Impala (New Style with VIN 1, 4th digit; BCM located in the LH dash)
Frequently Asked Questions
How does the mail-in programming service work?
After you place your order, we will contact you with detailed instructions to ship your original BCM to us. Once we receive it, we transfer its data to the replacement module and ship the new, programmed BCM back to you.
Do I need to send my keys with the BCM?
No. Because we are cloning the data from your original module, all of your existing key information will be transferred. Your current keys will work immediately upon installation.
Is this a plug-and-play solution?
Yes, for 99% of functions. Because we program the module for you, you will not need to visit a dealer for initial setup. In some rare cases, as noted above, a post-install procedure like an airbag sync may be needed if a warning light appears.
What is the turnaround time?
We typically program and ship your replacement module within 1-2 business days of receiving your original BCM. We will send you a tracking number as soon as it ships.
Will this fix my specific problem?
This part corrects issues caused by a faulty BCM. It’s crucial to properly diagnose the problem first. This module will not fix issues related to wiring, sensors, or other computers in the vehicle.