Are you experiencing a host of bizarre electrical issues with your Cadillac CTS? Problems like intermittent power windows, erratic door locks, flickering interior lights, or a security system that won’t behave are often traced back to a single, critical component: the Body Control Module (BCM). The BCM acts as the central computer for your vehicle’s body electronics, and when it fails, it can make your car feel like it has a mind of its own. This replacement Body Control Module is the definitive solution to restore order and get your vehicle’s features working reliably again.
From the Diagnostic Bay
We had a 2011 CTS in the shop that was driving its owner crazy. The radio would change stations on its own, the dome light would stay on, and the key fob worked only half the time. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication errors pointing towards the BCM. A common cause for this on these platforms is water intrusion from a leaky cowl or sunroof drain, which drips directly onto the module. Replacing the BCM and clearing the drain fixed every single issue. It’s a perfect example of how one part can cause a cascade of seemingly unrelated problems.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or seats operating intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ Malfunctioning keyless entry and security system.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers activating on their own or not responding to the switch.
- ✔ Warning lights on the dashboard with no apparent cause.
- ✔ Communication errors with other vehicle modules.
Restoring Your 2008-2013 CTS Body Control Module Functionality
The biggest hurdle in replacing a BCM is the need for expensive, vehicle-specific programming at a dealership. We eliminate that step entirely. When you order this module, you simply provide us with your vehicle’s VIN. Our technicians will then program the BCM with the latest GM software specific to your car’s configuration. This ensures that when the part arrives, it’s a true plug-and-play solution, saving you time, money, and the hassle of towing your car to a service center. This is the most efficient way to repair your 2008-2013 CTS Body Control Module and get back on the road.
Important Post-Installation Information
While this module is delivered ready for installation, some vehicle systems may require a simple relearn procedure to sync with the new BCM. This is a normal part of the repair process.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct operation of the brake lights and stability control systems.
This module is a direct replacement for a wide range of GM part numbers, including 10382479, 15819552, 20815898, 22860591, 25934763, and many more. Please see the full fitment list to confirm compatibility.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and the module will arrive ready to install.
Where is the BCM located on my 2008-2013 Cadillac CTS?
On the 2008-2013 Cadillac CTS, the Body Control Module is typically located in the left-hand (driver’s side) of the dashboard, often behind the lower dash panel.
What happens if I install this without providing a VIN?
The module will not function correctly. The programming is essential as it configures the BCM to your vehicle’s specific options, such as power seats, sunroof, security system, and more. The vehicle may not start or may have numerous features that do not work.
Is this a guaranteed fix for my car’s electrical problems?
This module will fix any issues directly caused by a faulty BCM. While the symptoms listed are very common for BCM failure, we always recommend a proper diagnosis by a qualified technician to rule out other potential causes like wiring faults or bad sensors.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your original module.