Restore Full Functionality to Your Cadillac CTS
Are you battling frustrating electrical issues in your 2008-2013 Cadillac CTS? Flickering interior lights, unresponsive power windows, a temperamental key fob, or a security system that acts up on its own are classic signs of a failing Body Control Module (BCM). As the central nervous system for your vehicle’s comfort and convenience features, a faulty BCM can turn your driving experience into a daily headache. This isn’t just an inconvenience; it can affect vehicle security and safety systems. I’ve seen it countless times in the shop: a luxury vehicle plagued by simple, yet maddening, electronic gremlins, all pointing back to this single component.
This is your direct-fit, reliable solution. We offer a genuine GM Body Control Module, part number 25847589, that comes fully programmed to your vehicle’s specific VIN. Forget the expensive trip to the dealership for programming and software flashing. Simply provide us with your VIN after purchase, and our experts will load the latest GM software onto the module. It arrives at your door ready for installation, saving you significant time, money, and hassle. This is the smart, efficient way to get your Cadillac back to the reliable, fully-functional vehicle it was meant to be.
A Technician’s Notebook: The Haunted Cadillac
A customer brought in his 2011 CTS complaining of ‘ghosts in the machine.’ The dome lights would fade in and out while driving, the radio would randomly change stations, and the remote start worked only half the time. He was convinced the car was possessed. We ran diagnostics and pulled a U0140 code—Lost Communication with Body Control Module. Instead of a complex wiring issue, my experience pointed straight to the BCM itself. Internal circuit board failures on these modules are common after a decade of heat cycles. We installed one of our VIN-programmed BCMs, performed the quick key relearn, and all the ‘ghosts’ vanished. It’s a textbook example of how a failing 2008-2013 CTS Body Control Module can manifest in bizarre ways.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. Proper diagnosis is always recommended, but these are the tell-tale symptoms we see daily.
- ✔ Unpredictable or non-working power windows, door locks, and mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not turning on at all.
- ✔ Malfunctioning security system or ‘Service Theft System’ message.
- ✔ Key fob not being recognized, leading to starting issues.
- ✔ Erratic behavior from the radio, climate controls, or instrument cluster gauges.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or B1001.
Your Straightforward BCM Installation Guide
Installing your new 2008-2013 CTS Body Control Module is a manageable job for a confident DIYer or any professional mechanic. Since we’ve handled the programming, you can focus on the physical swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: In the 2008-2013 Cadillac CTS, the BCM is typically located in the left-hand (driver’s side) of the dashboard, often behind the lower dash panel or near the steering column.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module. Use a non-marring pry tool to avoid scratching your interior.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Post-Installation Procedures: Reconnect the battery. You will need to perform a key relearn procedure (often detailed in your owner’s manual or easily found online). Additionally, two critical steps are required:
- Airbag Light Reset: A diagnostic scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This synchronizes the new BCM with the airbag system and turns off the warning light.
- Brake Pedal Recalibration: Some vehicles require the Brake Pedal Position Sensor to be recalibrated after a BCM replacement to ensure proper brake light function and stability control performance.
Verified Vehicle Compatibility
This module is a direct replacement for part number 25847589 and a wide range of other GM part numbers across many models. Please verify your part number or match your vehicle in the list below.
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
AVALANCHE 1500 10 (ID 25892622)
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13 (LH dash)
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10 (ID 25892622 or 20815898)
ESCALADE ESV 10 (ID 25892622 or 20815898)
ESCALADE EXT 10 (ID 25892622)
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10 (ID 25892622 or 20815898)
TAHOE 10 (ID 25892622 or 20815898)
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10 (ID 25892622 or 20815898)
YUKON XL 1500 10 (ID 20815898 or 25892622)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your car’s VIN before we ship it. It arrives ready to be installed, saving you from needing a dealer’s expensive programming services.
Where is the BCM located on my 2008-2013 Cadillac CTS?
The BCM is located inside the cabin, on the driver’s side (LH) behind the lower part of the dashboard, near the steering column.
What do I need to do after installing this new module?
After physical installation, you must perform a key relearn procedure. Critically, you will also need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ to clear the airbag light and, on some models, a brake pedal position sensor recalibration.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to send it to us. We cannot ship your order until we receive the VIN.
Is this a brand new part?
This is a high-quality, fully tested genuine GM part that has been expertly programmed with the latest software for your vehicle, ensuring reliable performance and a perfect fit.