Restore Your Vehicle’s Electrical System with a Pre-Programmed BCM
If you’re dealing with bizarre electrical issues in your 2013-2014 Chevrolet Sonic—like power windows with a mind of their own, flickering interior lights, or dashboard warnings that won’t go away—a failing Body Control Module (BCM) is often the culprit. As the central command center for your car’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating experience. This isn’t just an inconvenience; it can affect vehicle security and safety systems. We offer a reliable and straightforward solution: a replacement BCM programmed specifically for your vehicle.
Our unique service eliminates the costly and time-consuming trip to the dealership. Instead of buying a blank module and paying for expensive programming, you simply send us your original BCM. Our expert technicians will transfer all the critical data—including key programming and vehicle-specific settings—to this replacement unit. When you receive it back, it’s ready for installation. This ensures a seamless transition, preserving all your car’s original functionality. A properly functioning 2013-2014 Sonic BCM is essential for everything from your remote keyless entry to your interior lighting.
A Technician’s Notebook: The Sonic with a Ghost
I remember a 2013 Sonic that came into the shop with a list of complaints that sounded like a haunting. The owner said the dome light would randomly turn on while driving, the radio would shut off, and the power locks would cycle on their own. He’d already replaced the battery and checked the main grounds. After hooking up the scan tool, I saw a dozen communication error codes (U-codes) pointing to a network issue. Instead of chasing each individual problem, experience told me to look at the network’s hub: the BCM. A quick check of the data stream showed erratic voltage readings from the BCM’s internal sensors. We performed our cloning service, and the new BCM resolved every single issue. It’s a classic case of how one failing module can create system-wide chaos.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, locks, and mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system acting up, causing no-start conditions.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights (like Airbag or ABS) illuminating due to communication loss.
- ✔ Remote keyless entry failing to lock or unlock the doors.
Your Straightforward Installation Guide
- ✔ Step 1: Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Step 2: Locate the BCM: In the 2013-2014 Sonic, the BCM is located behind the trim panel in the right-hand (passenger side) rear quarter panel area.
- ✔ Step 3: Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Press the release tabs firmly to avoid damaging them. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Step 4: Install the New BCM: Mount the replacement module in the same location and securely reconnect all electrical connectors. You should hear a click as they lock into place.
- ✔ Step 5: Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, and horn—to ensure everything is working correctly.
Important Post-Installation Information
While our programming service for the 2013-2014 Sonic BCM makes this a near plug-and-play repair, some vehicle systems may require a recalibration after the new module is installed. Please be aware of the following:
- Airbag System Sync: If your airbag warning light is on 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.
- Brake Pedal Position Relearn: To ensure correct brake light and traction control operation, a brake pedal position sensor relearn procedure may be necessary.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Will This Fit My Vehicle?
This BCM is a guaranteed fit for the following vehicles, provided the part number matches. Please verify your original part number before ordering. This module is a direct replacement for part numbers 13586589, 13589093, and 13580689.
- 2013-2014 Chevrolet Sonic (Located in RH rear quarter panel)
- 2013 Cadillac ATS (Located on the firewall)
- 2013 Cadillac XTS (Located in the left front hinge pillar)
- 2014 Chevrolet Impala (VIN 1, 4th digit, New Style) (Located in the LH dash)
Frequently Asked Questions
How does the mail-in programming service work?
After you purchase, we will contact you with simple instructions and a shipping address. You mail your original BCM to us. Once we receive it, we transfer all the necessary data to the replacement unit and ship it back to you, typically within 1-2 business days.
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that the module arrives pre-programmed with your vehicle’s specific data. This allows you to avoid expensive dealership programming fees.
Is this a simple plug-and-play installation?
For the most part, yes. Once you receive the programmed module from us, you just need to install it. However, as noted, some models may require a simple relearn procedure for the airbag or brake pedal sensor, which may require a professional scan tool.
What happens if I install it and my airbag light comes on?
This is a known possibility. It means the BCM and the Sensing and Diagnostic Module (SDM) need to be electronically re-synced. A repair shop with a capable bidirectional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
What part numbers does this BCM replace?
This module is a direct replacement for part numbers 13586589, 13589093, and 13580689. Please check the number on your original BCM to confirm compatibility.
Is there a core charge for my old BCM?
No, there is no core charge. We need your original module to perform the programming service, but you are welcome to have it shipped back to you with your newly programmed unit if you wish.