Restore Full Electrical Control to Your Cadillac DTS
If you’re dealing with bizarre electrical issues in your 2006-2011 Cadillac DTS—like flickering dash lights, power windows with a mind of their own, or a security system that won’t cooperate—a failing Body Control Module (BCM) is the likely culprit. As a technician with over 20 years of experience, I’ve seen how a faulty BCM can turn a luxury vehicle into a source of constant frustration. It’s the central command for your car’s comfort and convenience features, and when it goes, chaos ensues. This replacement BCM is your direct, reliable solution to restore order.
Our key service makes this repair accessible to everyone. We perform a professional cloning service before we ship the module to you. Simply provide your vehicle’s VIN at checkout, and we will flash this BCM with the latest GM software and transfer the critical data from your original unit. This means no expensive trips to the dealership for programming. It arrives at your door ready to install, making it a true plug-and-play fix for both seasoned mechanics and determined DIYers.
A Technician’s Notebook
I remember a 2008 Cadillac DTS that came into the shop with a laundry list of complaints from the owner. The radio would turn off randomly, the driver’s side power lock was dead, and the interior lights would stay on, draining the battery. The initial scan showed a dozen communication codes (U-codes) pointing in every direction. Instead of chasing ghosts, we went straight to the source. A failing BCM can disrupt the entire data network, creating phantom problems. After installing a VIN-programmed BCM like this one, every single issue vanished. It’s a reminder that sometimes the most complex-seeming problems have a single, straightforward solution.
Common Signs of a Failing BCM
A faulty BCM can cause a wide range of symptoms that may seem unrelated. If your Cadillac is experiencing any of the following, your BCM is the most probable cause:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that won’t turn on or off correctly.
- ✔ The security system acting up, or the car not starting due to a false alarm (often with a security light on the dash).
- ✔ Inconsistent or failed operation of the windshield wipers.
- ✔ Multiple communication error codes (U-codes) stored in the system.
- ✔ Dashboard warning lights flickering or staying on without a clear cause.
Your Straightforward BCM Installation Guide
For the Cadillac DTS, the BCM is located on the right-hand side of the center dash, typically accessible by removing the glove box. This makes for a relatively simple swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: Open and remove the glove box assembly. You may need to release clips or remove a few screws to get it out of the way.
- Locate the BCM: You will see the Body Control Module mounted behind the glove box area. It will have several large electrical connectors attached.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- Final Steps: Reinstall the glove box and reconnect the negative battery terminal. Start the vehicle to confirm that the electrical issues are resolved.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a relearn procedure to sync with the new BCM. This is normal. Please be aware of the following potential requirements:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 25847588 and is interchangeable with a wide range of other GM part numbers. Please verify your original part number against this list. This module fits many GM vehicles, including the 2006-2011 Cadillac DTS.
Compatible 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.
Fitment Includes (but not limited to): Acadia (07-12), Avalanche (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express Van (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), Savana Van (08-12), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/XL (10).
What exactly is a ‘cloning service’?
What exactly is a ‘cloning service’?
Cloning is the process where we transfer the essential vehicle-specific data—like the VIN, security information, and optional feature settings—from your original BCM to the replacement unit. This makes the new module a perfect digital copy, allowing it to work in your car without any additional programming.
Do I need any special tools to install this?
No special programming tools are required. The installation itself typically requires only basic hand tools like a socket set and screwdrivers to access the module’s location. Our cloning service handles all the complex software work for you.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot program and ship your BCM without it. You can typically find your VIN on your vehicle’s registration, insurance card, or on a plate on the driver’s side of the dashboard visible through the windshield.
What do I do with my old BCM?
Our service does not require you to send your original module to us. We program the replacement unit using your VIN. Once you install the new part, you can simply keep or dispose of your old one.
Will this fix my ‘Service Security System’ message?
In many cases, yes. The BCM is integral to the vehicle’s anti-theft and security system (Pass-Key/Passlock). A faulty BCM is a very common reason for security-related warnings and no-start conditions. Replacing it with a correctly programmed unit often resolves these issues.