Are you experiencing a cascade of bizarre electrical problems in your Cadillac CTS? From flickering lights and malfunctioning power windows to a car that won’t start, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central nervous system for your vehicle’s electronic accessories, and when it fails, it can create frustrating and seemingly unrelated issues. This VIN-programmed Body Control Module is the definitive solution, designed to restore full functionality and get your vehicle back on the road without a trip to the dealership for programming.
We make the process simple. Upon purchase, you provide us with your vehicle’s VIN. Our technicians will then program this module with the latest GM software specific to your car’s configuration. This ensures a seamless, plug-and-play installation. You are receiving a reliable, tested module that is ready to be installed right out of the box, eliminating the high costs and hassle of dealership programming.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from the dashboard gauges or interior/exterior lights.
- ✔ The security system acting up, preventing the car from starting.
- ✔ A/C and climate control functions not responding correctly.
- ✔ Communication errors with other vehicle modules, triggering multiple warning lights.
- ✔ Key fob not being recognized or working intermittently.
Why Choose Our 2008-2013 CTS Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. By pre-programming the module to your specific VIN, we eliminate the most complex step of the repair process. This module is a direct replacement for a wide range of original part numbers, including 20935349, 15921353, 22860591, and many others listed below, ensuring broad compatibility across the GM family. Simply install the module, and in most cases, your vehicle’s body electronics will be fully restored. Please note that for some vehicles, minor post-installation procedures may be required.
Post-Installation Information
While this module is designed for a straightforward installation, some vehicle systems may need to be re-synced after the BCM is replaced. If your airbag warning light illuminates after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, a ‘Brake Pedal Position Relearn’ may be necessary on certain models to ensure correct brake light and traction control operation. Always consult a factory service manual for your specific vehicle if you are unsure.
Frequently Asked Questions
What does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related functions, such as power windows, locks, lights, security system, wipers, and climate control.
Do I need to get this programmed?
No. We handle all the programming for you before we ship the part. Simply provide your vehicle’s VIN during or after checkout, and it will arrive ready to install.
Is this part difficult to install?
For the 2008-2013 CTS, the BCM is typically located in the left-hand (driver’s side) dash area. Installation involves disconnecting the battery and swapping the module. It is a manageable job for a DIYer with basic tools, but we always recommend consulting a service manual.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system issues and ‘Service Theft System’ messages. Replacing it with our pre-programmed module often resolves these problems.
What if my airbag light comes on after I install it?
This indicates the new BCM needs to be synced with the airbag system’s SDM. A ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade diagnostic tool to clear the light.