Is your 2008-2013 Cadillac CTS experiencing bizarre electrical issues? The Body Control Module, or BCM, is the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can cause a cascade of frustrating problems that seem unrelated, from flickering lights to malfunctioning power windows. This direct-fit Body Control Module, part number 25934763, is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
Unlike a standard replacement part from a dealership or local parts store, this BCM arrives at your door pre-programmed to your specific vehicle. We use your Vehicle Identification Number (VIN) to flash the module with the latest, most stable software updates directly from GM. This critical step ensures a seamless installation process, eliminating the need for expensive programming tools or a costly visit to the dealership. Simply provide your VIN after purchase, and we handle the complex part for you.
Common Symptoms of a Failing 2008-2013 CTS BCM
- ✔ Intermittent or non-working power windows, door locks, and mirrors.
- ✔ Erratic interior or exterior lighting, including headlights and dashboard lights that won’t turn off.
- ✔ The security system acting up, causing alarm issues or preventing the car from starting.
- ✔ Radio or climate control systems functioning incorrectly or not at all.
- ✔ False warning lights appearing on the instrument cluster (e.g., airbag, service vehicle soon).
- ✔ Communication errors when a diagnostic scan tool is connected.
From the Diagnostic Bay
We had a 2011 Cadillac CTS come into the shop with a classic ‘phantom drain’ issue. The owner had replaced the battery twice, convinced it was faulty. Every morning, the car was dead. After checking the alternator and running a parasitic draw test, we traced the issue to the BCM. It wasn’t fully ‘sleeping’ when the car was off, keeping multiple circuits active and draining the battery overnight. A new, properly programmed BCM solved the problem instantly, saving the customer from buying a third battery and ending months of frustration.
Installation and Post-Install Considerations
For the 2008-2013 Cadillac CTS, the BCM is typically located in the left-hand (driver’s side) of the dashboard. While the physical replacement is straightforward for a seasoned DIYer or any professional technician, some vehicles may require additional electronic ‘handshake’ procedures after the new module is installed. This is normal and ensures all related systems communicate correctly. Specifically, an Airbag System Sync may be needed if the airbag light illuminates, and a Brake Pedal Position Relearn might be required for proper brake light and traction control operation. These procedures are performed with a professional-grade scan tool.
Guaranteed Fitment for a Wide Range of GM Vehicles
This module is a direct replacement for a comprehensive list of part numbers, ensuring compatibility. Please verify your original part number against this list:
Replaces Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
While this page focuses on the 2008-2013 CTS BCM, this part also fits many other GM models. Please see the detailed fitment list below to confirm for other vehicles.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions. This includes power windows, door locks, interior and exterior lighting, the security system, climate controls, and wipers. It acts as a central hub for these electronic systems.
Is this BCM truly ‘plug-and-play’?
Yes, because we program it to your vehicle’s VIN before shipping, it is designed to be a plug-and-play installation. This programming ensures the BCM has the correct software and settings for your specific options, avoiding the need for a trip to the dealer for programming.
Where is the BCM located on my 2008-2013 Cadillac CTS?
On the 2008-2013 Cadillac CTS, the Body Control Module is typically found on the driver’s side of the vehicle, located behind the lower part of the dashboard (LH dash).
What happens if I forget to provide my VIN?
Providing your VIN is a required step for this purchase. We cannot program and ship the module without it. After you place your order, we will contact you to obtain the VIN to ensure the module you receive is a perfect match for your vehicle’s configuration.
Are there any other costs, like a core charge?
No, there is no core charge for this module. You can keep your original part without needing to send it back to us.