Restore Your Cadillac’s Electrical System and Drive with Confidence
Are you experiencing a cascade of frustrating electrical problems in your Cadillac CTS? Flickering lights, malfunctioning power windows, erratic dashboard warnings, or a security system that won’t cooperate are all classic signs of a failing Body Control Module (BCM). This vital component is the central nervous system for your vehicle’s body electronics, and when it fails, it can make your luxury car feel unreliable. This is the definitive, hassle-free solution to restore your vehicle’s full functionality and your peace of mind.
Common Symptoms & Your Solution
A faulty BCM can be difficult to diagnose, as it often creates a wide range of seemingly unrelated issues. If you’re dealing with any of the following, a failing BCM is the likely culprit:
- Interior or exterior lights not working correctly
- Power windows, locks, or mirrors behaving erratically
- Vehicle security system faults or key fob issues
- Intermittent starting problems
- Warning lights on the dash with no clear cause
- Communication errors with other vehicle modules (DTC U-codes)
This isn’t a generic, one-size-fits-all part. We provide a fully Programmed 2008-2013 Cadillac CTS Body Control Module, flashed with the latest GM software updates specifically for your car using the VIN you provide. This critical step ensures the module communicates perfectly with your vehicle’s existing systems, eliminating the need for an expensive trip to the dealership for programming.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: Arrives ready for installation, saving you hundreds in dealership programming fees and diagnostic time.
- ✔ Loaded with Latest GM Updates: We flash the module with the most current software, ensuring optimal performance and compatibility.
- ✔ Direct-Fit Replacement: Engineered to be a perfect match for the original unit, guaranteeing a seamless installation process. This module replaces numerous part numbers, including 25847588, 15921352, 20815898, and more.
- ✔ No Core Charge: Keep your old module. There are no core fees or return hassles to worry about, simplifying your repair.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of Proper Programming
Many owners are tempted to buy a used BCM from a salvage yard to save money, but this is a common mistake. A BCM is not a simple plug-and-play part; it’s coded with the specific options and security information of its original vehicle. Installing a used, un-programmed module in your Cadillac will, at best, not work correctly and, at worst, can immobilize your vehicle completely. Our VIN-programming service is not just a convenience—it’s the essential step that makes this a reliable and successful repair.
Post-Installation Procedures
While this module is programmed for your vehicle, certain systems may require a relearn procedure after installation to sync properly. These are standard steps for this type of repair:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible professional scan tool.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor may be required on some models to ensure proper brake light and stability control function.
Disclaimer: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Extensive Vehicle Compatibility
While this listing is for the 2008-2013 Cadillac CTS, this BCM (part number 25847588 and its equivalents) fits a wide array of GM vehicles. Please verify your part number and model from the list below to ensure compatibility.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide range of non-engine-related functions. This includes power windows, door locks, lighting, security systems, wipers, and various other comfort and convenience features.
How do I know if my BCM is failing?
Common symptoms include multiple, unrelated electrical issues happening at once. For example, your dome light might stay on, your power locks may not work, and you might see a ‘Service Theft System’ message. A professional diagnosis with a high-end scan tool is the best way to confirm the BCM is the root cause.
Is this module difficult to install?
The physical installation is typically straightforward for someone with moderate mechanical skill, often located under the dashboard. However, as noted, some post-installation electronic ‘relearn’ procedures may be necessary with a professional scan tool to ensure all systems (like airbags) are fully synced.
Do I need to send my old BCM back?
No. This product comes with no core charge, so you are not required to return your original module. This saves you time and the cost of return shipping.
What happens after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We will use this to program the module with the correct software and vehicle-specific options before shipping it to you.
Will this fix my specific electrical issue?
If your vehicle’s issues have been correctly diagnosed as a faulty BCM, this part is the solution. It is designed to restore all functions controlled by the BCM. If you are unsure about the diagnosis, we recommend consulting with a qualified automotive technician.