Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your 2008-2013 Cadillac CTS? Intermittent power windows, flickering dash lights, malfunctioning door locks, or a security system that acts up for no reason? These are classic signs of a failing Body Control Module (BCM), the central command center for your vehicle’s comfort and convenience features. A faulty BCM can turn your luxury sedan into a source of daily frustration. This isn’t just an inconvenience; it can affect vehicle security and functionality. Don’t let a failing module compromise your driving experience. We offer a reliable, ready-to-install solution.
This is a direct-replacement Body Control Module for your Cadillac CTS. The best part? It arrives at your door with our complete Cloning Service. This means we transfer the essential vehicle-specific data from your original BCM to this replacement unit. The result is a truly plug-and-play installation that eliminates the need for expensive dealership programming or specialized scan tools for setup. You get a part that works correctly right out of the box, restoring all body functions to factory-spec operation.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2011 CTS that came into the bay with a laundry list of the strangest symptoms. The radio would change stations on its own, the driver’s side window would only work sometimes, and the alarm would randomly go off in the middle of the night. The owner had already replaced the battery and checked all the fuses. A scan showed a dozen intermittent communication codes (U-codes) all pointing back to the BCM. After swapping in a cloned BCM like this one, every single ghost in the machine vanished. It’s a perfect example of how a single failing module can wreak havoc across multiple, seemingly unrelated systems.
Common Symptoms of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM could be the culprit. A proper diagnosis is key, but these are strong indicators I’ve seen countless times in my 20+ years of experience.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system or keyless entry works intermittently or not at all.
- ✔ Warning lights on the dashboard (like the airbag or security light) stay on.
- ✔ Communication error codes, especially U-codes like U0140 (Lost Communication With Body Control Module).
- ✔ Rapid battery drain while the vehicle is off, caused by the BCM failing to let other modules go to ‘sleep’.
- ✔ In severe cases, a no-start condition where the BCM fails to recognize the key or enable the starting circuit.
Your Straightforward Installation Guide
Installing your cloned 2008-2013 CTS Body Control Module is a manageable task for a confident DIYer. The BCM in the CTS is typically located on the left (driver’s) side of the dash, often behind the lower trim panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: Carefully remove the lower dash panel or kick panel on the driver’s side to expose the BCM. It will have several large electrical connectors attached.
- Swap the Units: Take a photo of the connector positions for reference. Carefully press the release tabs and disconnect all electrical harnesses from the old BCM. Unbolt or unclip the module from its mounting bracket and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical harnesses firmly until they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, windows, locks, wipers, etc.
- Perform Relearns (If Needed): Start the vehicle. If an airbag light appears, the ‘Setup SDM Primary Key in BCM’ procedure may be needed with a pro-level scan tool. A Brake Pedal Position Relearn might also be required for proper brake light and traction control operation.
Verified Vehicle Compatibility
This module is a guaranteed fit for the 2008-2013 Cadillac CTS. It also serves as a direct replacement for a wide range of other GM vehicles and supersedes numerous part numbers, ensuring broad compatibility. Please verify your original part number against the list below or contact us with your VIN to confirm fitment.
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
Partial Fitment List:
- ✔ Cadillac CTS (2008-2013)
- ✔ Cadillac DTS (2006-2011)
- ✔ Cadillac Escalade, ESV, EXT (2010)
- ✔ Chevrolet Impala (2006-2013)
- ✔ Chevrolet Tahoe / Suburban (2010)
- ✔ GMC Acadia (2007-2012)
- ✔ GMC Yukon / Yukon XL (2010)
- ✔ Chevrolet Express / GMC Savana Vans (2008-2012)
- ✔ And many more models. See the full fitment chart for details.
What is the ‘Cloning Service’ process?
After you place your order, we will provide instructions for you to send us your original BCM. We then use specialized equipment to extract the vehicle-specific data (like VIN, mileage, key information, and option content) and transfer it directly to the replacement unit. This makes the new module a perfect electronic match for your car, avoiding programming hassles.
Do I need to get this programmed by a dealer?
No. Our Cloning Service completely eliminates the need for any additional programming or flashing by a dealer or mechanic. It will be ready for installation as soon as you receive it.
Is this a difficult part to install myself?
For someone with basic mechanical skills and hand tools, this is a very manageable job. The main challenge is typically accessing the module’s location under the dashboard. By following our guide and taking your time, a DIY installation is very achievable, saving you significant labor costs.
What if my airbag light comes on after installation?
This is uncommon but can happen. It means the new BCM and the airbag system (SDM) need to be electronically re-introduced. This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by any professional shop with a compatible high-end diagnostic tool.
What is your policy on the original (core) module?
We always return your original module to you along with the newly cloned replacement. We do not require it as a core and there are no core charges. You are purchasing the replacement unit and the cloning service.
Will this fix my specific problem?
This 2008-2013 CTS Body Control Module is the definitive solution for failures within the module itself. While we cannot diagnose your vehicle remotely, the symptoms listed above are strong indicators of BCM failure. We always recommend confirming the diagnosis with a qualified mechanic if you are unsure.