Tired of Unpredictable Electrical Gremlins in Your GM Vehicle?
As a technician with over two decades of experience, I’ve seen it all when it comes to vehicle electronics. One of the most common culprits for bizarre issues—like power windows with a mind of their own, flickering dash lights, or a car that refuses to start—is a failing Body Control Module (BCM). If you’re dealing with these headaches in your Buick, Chevy, or Cadillac, you’ve found the straightforward, cost-effective solution. This isn’t just a part; it’s a complete service designed to get you back on the road without the dealership’s high costs and scheduling delays.
This listing is for a replacement BCM, compatible with part numbers including 13580696 and 123589093, that is professionally programmed using the data from your original module. This cloning process is essential because the BCM stores your vehicle’s specific VIN, security information, and option settings. By transferring this data, we ensure the replacement module is a true plug-and-play solution. The process is simple: after your purchase, you’ll ship your original BCM to us. We’ll handle the data transfer and ship your ready-to-install module back to you promptly.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft system light stays on, preventing the car from starting.
- ✔ Horn honking randomly or not working at all.
- ✔ Wipers activating on their own or failing to turn on.
- ✔ False warnings appearing on the driver information center (DIC).
- ✔ Communication failure diagnostic trouble codes (DTCs), such as U0140, U0155, or other U-codes, stored in the system.
Case Study: A Tricky Diagnosis
A customer brought in a 2012 LaCrosse with a frustrating complaint: sometimes the radio wouldn’t turn off after shutting the car off, draining the battery overnight. Other times, the driver’s side window wouldn’t respond. They had already replaced the battery and the window switch with no luck. After connecting my scan tool, I noticed intermittent communication loss with the BCM. Instead of quoting them over $800 for a new module and programming at the dealer, we used a cloning service just like this one. The total repair time was minimal once the part arrived, and the cost was a fraction of the dealership’s quote. It’s a prime example of how a quality programmed 2012 Regal BCM can solve complex issues simply.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate Your BCM: The location varies by model (see our fitment list). It’s typically found under the driver’s or passenger’s side of the dashboard, or in a kick panel. A quick search for your specific model can provide diagrams.
- ✔ Remove the Original: Carefully disconnect all electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Remove any bolts or clips holding the module in place.
- ✔ Install the New Module: Mount the replacement BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock 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. Note any warning lights on the dash.
Important Post-Installation Information
In some cases, additional steps may be required after installation:
- Airbag System Sync: If the airbag warning light is illuminated, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This requires a professional-grade diagnostic tool to synchronize the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be necessary. This can also be performed with a compatible scan tool.
Always consult a factory service manual or a qualified professional if you are unsure about any of these procedures.
Verified Vehicle Compatibility
This module is a direct fit for the following vehicles and part numbers. Please match your part number (13580696, 123589093, 13588446, 13584692, 13583542) for guaranteed compatibility.
- ✔ Buick LaCrosse: 2012-2013 (LH kick panel)
- ✔ Buick Regal: 2012 (LH dash)
- ✔ Buick Verano: 2012 (below center of dash)
- ✔ Cadillac SRX: 2012 (LH dash)
- ✔ Chevrolet Camaro: 2012-2014 (RH dash)
- ✔ Chevrolet Equinox: 2012 (LH side dash)
- ✔ Chevrolet Spark: 2013 (left lower a-pillar)
- ✔ Chevrolet Volt: 2012 (RH engine compartment)
- ✔ GMC Terrain: 2012 (LH side dash)
Frequently Asked Questions
Why do I need to send you my original BCM?
Your original BCM contains unique security and vehicle-specific data (like your VIN and installed options). We clone this information to the replacement module, making it truly plug-and-play and avoiding expensive dealership programming.
Is this difficult to install myself?
The physical swap is straightforward for a DIYer with basic tools. It involves disconnecting the battery, locating the module, and swapping connectors. The main challenge can be accessing the module, as it’s often tucked under the dash.
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 before ordering if your module is severely damaged (e.g., by water or fire) or if a technician has confirmed it is completely unresponsive.
How long does the programming service take?
Once we receive your original BCM, our process is typically completed and shipped back out within 1-2 business days. We will send you tracking information as soon as it’s on its way back to you.
Do I have to send back a core?
No, there is no core charge for this service. You can keep your original module after you send it to us for the data transfer.
What happens if the airbag light comes on after installation?
This indicates the BCM and the airbag module (SDM) need to be electronically re-synced. This is a common security measure and requires a ‘Setup SDM Primary Key’ procedure with a professional scan tool.