Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Are you battling frustrating electrical gremlins in your 2008-2013 Cadillac CTS? Intermittent power window failures, flickering interior or exterior lights, a security system that acts up, or strange warning messages on the dash are all classic signs of a failing Body Control Module (BCM). In my 20+ years as a technician, I’ve seen how a faulty BCM can turn a luxury vehicle into a source of daily frustration. It’s the central hub for your car’s body electronics, and when it fails, it can cause a cascade of seemingly unrelated problems.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional Cloning Service for this BCM. Simply send us your original module, and we will transfer all the critical, vehicle-specific data to this replacement unit. We also flash it with the latest GM software updates, ensuring optimal performance and reliability. This process makes the replacement 2008-2013 CTS Body Control Module a true plug-and-play component, eliminating the need for an expensive trip to the dealership for programming. You get your vehicle back to factory-spec operation without the extra cost or downtime.
A Technician’s Notebook
I recently worked on a 2011 CTS that had the owner completely stumped. The radio would randomly shut off, the driver’s side window would only work occasionally, and the key fob range was terrible. The owner had already replaced the battery and checked all the fuses. A scan showed a generic U0140 code—Lost Communication with Body Control Module. After confirming power and ground at the BCM connector were solid, we knew the module itself was the culprit. Instead of a costly new unit and dealer programming, we used our cloning service. The customer sent in their old BCM, we transferred the data, and sent both units back. The installation was a simple swap, and all the bizarre electrical issues were gone for good. It’s a reliable fix that saves time and money.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM could be the root cause. This is especially true if you see communication-related Diagnostic Trouble Codes (DTCs).
- ✔ Erratic or non-functional power windows, locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or anti-theft light is illuminated or malfunctioning.
- ✔ Keyless entry or remote start features stop working reliably.
- ✔ Instrument cluster warnings like “Service Theft System” appear.
- ✔ Communication error codes, such as U0140, U0155, or other U-codes.
- ✔ In severe cases, a no-start condition where the vehicle won’t crank.
A Straightforward Guide to Installation
Installing your cloned 2008-2013 CTS Body Control Module is a direct swap. While the exact location can vary slightly, here is a general guide for the Cadillac CTS.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On the 2008-2013 CTS, the BCM is typically located on the left-hand (driver’s side) of the dashboard, often behind the lower dash panel or near the steering column.
- Access the Module: You may need to remove a few plastic trim panels to gain clear access to the BCM. These panels are usually held in with clips or small screws.
- Disconnect and Remove: Carefully unplug the 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 Module: Mount the replacement BCM in the same position and securely fasten it. Reconnect all electrical connectors, ensuring they click into place.
- Reconnect and Test: Reattach the negative battery terminal. Turn the ignition on and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair was successful.
Post-Installation Checks
In most cases, our cloning service makes this a simple swap. However, due to the complexity of modern vehicle systems, some models may require an additional step:
- ✔ Airbag System Sync: If the 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 vehicles, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your part number is on this list or that your vehicle is listed below. Our VIN-specific programming ensures it works for your exact application.
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
Fits Models Including:
- 2008-2013 Cadillac CTS (LH dash)
- 2007-2012 GMC Acadia (LH dash)
- 2010-2013 Chevrolet Avalanche (under steering column)
- 2011-2013 Chevrolet Caprice
- 2012 Chevrolet Captiva Sport (center dash)
- 2006-2011 Cadillac DTS (RH center dash)
- 2008-2012 Buick Enclave (LH dash)
- 2007-2009 Chevrolet Equinox (center dash)
- 2010 Cadillac Escalade / ESV / EXT (under steering column)
- 2008-2012 Chevrolet Express & GMC Savana Vans (center dash)
- 2008-2009 Pontiac G8 (center dash)
- 2008-2009 Hummer H2 (LH firewall)
- 2006-2013 Chevrolet Impala (LH dash)
- 2006-2011 Buick Lucerne (right side dash)
- 2006-2007 Chevrolet Monte Carlo (LH steering column)
- 2007-2010 Saturn Outlook (center dash)
- 2007-2009 Cadillac SRX (LH dash)
- 2010 Cadillac STS (center dash)
- 2010 Chevrolet Suburban / GMC Yukon (under steering column)
- 2007-2009 Pontiac Torrent (center dash)
- 2009-2012 Chevrolet Traverse (LH dash)
- 2008-2010 Saturn Vue (center dash)
How does the Cloning Service work?
You purchase this listing and then ship your original BCM to us. We extract the unique data from your module and transfer it to the replacement unit. This ensures all your vehicle’s options and security information are preserved, making the installation plug-and-play. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to provide my VIN?
While the cloning process transfers data directly from your module, providing your VIN allows us to double-check for any applicable factory software updates from GM, ensuring your replacement BCM has the most stable and reliable programming available.
Why do I need to send my original BCM?
Your original BCM contains security codes and vehicle-specific configuration data that are essential for your car to run correctly. Cloning this information is the most reliable way to ensure the replacement part works seamlessly without requiring expensive dealer-only programming tools.
What happens to my original part?
Your original module is always returned to you along with the programmed replacement unit. We do not keep your core part. You can keep it as a spare or dispose of it as you see fit.
Will I need a mechanic to install this?
For many experienced DIYers, this is a manageable job. The module is a direct physical swap. However, if you are not comfortable working with vehicle electronics or removing dashboard components, we recommend seeking professional installation. Additionally, a pro-level scan tool may be needed for post-install procedures like the airbag system sync if the light appears.