Restore Full Electrical Function to Your Cadillac DTS
Is your 2006-2011 Cadillac DTS experiencing bizarre electrical problems that seem to have no source? Flickering interior lights, power windows with a mind of their own, a security light that stays on, or even a no-start condition can all point to a single culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable issues. This isn’t just an inconvenience; it can compromise your vehicle’s security and functionality.
This replacement Body Control Module is the definitive, reliable solution. It arrives at your door fully programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This crucial step eliminates the need for an expensive trip to the dealership for programming, saving you both time and money. Simply provide your VIN at checkout, and we handle the complex part, delivering a component that’s ready for installation right out of the box.
From the Diagnostic Bay: The Case of the Haunted DTS
I remember a 2009 Cadillac DTS that came into my shop with a laundry list of complaints from the owner. The radio would turn on and off, the driver’s side power window wouldn’t work, and the alarm would randomly go off in the middle of the night. The owner was convinced the car was possessed. After checking the basics—battery, fuses, and grounds—my scan tool revealed multiple communication loss codes (U-codes) pointing to the BCM. Instead of a costly and time-consuming diagnostic rabbit hole, we ordered a pre-programmed 2006-2011 DTS BCM. The installation took less than an hour, and instantly, all the ghostly electrical gremlins were gone. The customer was thrilled to get a fast, affordable fix and have his car back to normal.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a failing BCM is the likely cause. In my 20+ years of experience, these are the most common symptoms I’ve seen tied to BCM failure on these GM platforms.
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ The security or anti-theft light stays illuminated, potentially causing a no-start issue.
- ✔ Interior dome lights or dashboard lights flicker or fail to work correctly.
- ✔ Horn sounds unexpectedly or doesn’t work at all.
- ✔ Remote keyless entry (RKE) system is unresponsive.
- ✔ Diagnostic communication errors, such as DTC U0140 (Lost Communication With Body Control Module).
A Straightforward Guide to BCM Installation
For the confident DIYer or professional technician, replacing the BCM is a manageable job. In most Cadillac DTS models, the BCM is located behind the glove box or on the right-hand side of the center dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: Remove any trim panels or the glove box assembly necessary to gain clear access to the old BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Note their orientation. Then, 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 and securely reconnect all electrical connectors.
- Final Steps: Reassemble the dash components and reconnect the negative battery terminal.
Important Post-Installation Note: After installation, some vehicles may require additional relearn procedures. The two most common are an Airbag System Sync (if the airbag light is on) and a Brake Pedal Position Relearn. These procedures may require a professional-grade scan tool to complete. Always consult a factory service manual for your specific model’s requirements.
Will This Fit My Vehicle?
This BCM is a direct replacement for a wide range of General Motors vehicles and is compatible with numerous part numbers. Please verify your vehicle is on the list below and that your original part number is listed.
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
Fits Models Including:
- Cadillac DTS (2006-2011)
- Cadillac CTS (2008-2013)
- Cadillac Escalade, ESV, EXT (2010)
- Chevrolet Impala (2006-2013)
- Chevrolet Tahoe & Suburban 1500 (2010)
- Chevrolet Express & GMC Savana Vans (2008-2012)
- GMC Acadia (2007-2012)
- Buick Enclave (2008-2012)
- And many more listed in the full fitment data.
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options your Cadillac DTS was built with. This ensures seamless integration and proper function of all electronic systems, eliminating the need for dealership programming.
Is this part truly plug-and-play?
Yes, because we program it to your VIN before shipping, the module is ready for installation. In some cases, a simple relearn procedure for systems like the airbag or brake pedal position sensor may be needed post-installation, which can sometimes require a diagnostic tool.
What happens if the airbag light is on after I install it?
This is a known possibility. It simply means the new BCM needs to be synced with the airbag’s Supplemental Deployment Module (SDM). A procedure called “Setup SDM Primary Key in BCM” needs to be performed with a professional scan tool to resolve this.
Do I have to return my old BCM?
No, there is absolutely no core charge for this part. You can keep your old module, which saves you the time and hassle of shipping it back.