Restore Full Electrical Functionality to Your GM Vehicle
If you’re dealing with a frustrating array of electrical gremlins in your Cadillac DTS or another compatible GM vehicle, a failing Body Control Module (BCM) is the likely culprit. As a technician with over two decades of experience, I’ve seen firsthand how a bad BCM can turn a reliable vehicle into a source of constant headaches. It’s the central command center for your car’s body electronics—from power windows and locks to interior lighting and the security system. When it fails, you get unpredictable, confusing symptoms that can be a nightmare to diagnose.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take a genuine OEM-spec BCM, part number 25934763, and flash it with the very latest GM software updates, specifically programmed to your vehicle’s unique VIN. This crucial step ensures seamless integration and proper function, eliminating the need for an expensive trip to the dealership for programming. You get a part that’s ready to install right out of the box, restoring your vehicle’s performance and your peace of mind.
Case Study: A Tricky Diagnosis
Just last month, a 2008 Cadillac DTS was towed to my shop. The owner was at his wit’s end. The radio would turn on and off by itself, the driver’s side power window wouldn’t work, and the anti-theft light was flashing, causing an intermittent no-start condition. He had already replaced the battery and checked all the fuses. A quick scan with my diagnostic tool revealed a slew of U-codes (U0140, U0155), indicating a loss of communication with the BCM. Instead of a complex wiring issue, the root cause was an internal failure in the original BCM. We installed one of our VIN-programmed modules, performed the necessary key relearn, and the car was back to perfect working order in under an hour. This is the exact fix for those baffling electrical issues.
Signs Your GM BCM is Failing
A faulty BCM can manifest in numerous ways. If you’re noticing any of the following, it’s time to consider a replacement. This 2006-2011 DTS Body Control Module is the definitive solution for these common problems.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system acting up, causing alarm issues or a no-start condition.
- ✔ The horn honking randomly or not working when pressed.
- ✔ Warning lights on the dash, such as the airbag light or anti-theft light.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0141, or other B-series codes.
- ✔ Wipers that activate on their own or fail to operate correctly.
Your Straightforward BCM Installation Guide
Installing your new BCM is a manageable job for a confident DIYer. While the exact location varies by model (check your vehicle’s service manual), the general process is similar. Remember, this 2006-2011 DTS Body Control Module is pre-programmed, but post-installation steps are required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the 2006-2011 DTS, the BCM is typically located behind the right side of the center dash. For other models, it may be under the steering column or in the dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Relearn Procedures: This step is critical. You will need to perform a security relearn (often called a Passlock or Passkey relearn) to allow the vehicle to start. This procedure typically involves cycling the key in the ignition and can be found in your owner’s manual or online.
Important Post-Installation Steps
After installing your new BCM, a few additional procedures are necessary to ensure all vehicle systems work correctly and safely. These often require a professional-grade scan tool.
- Airbag System Reset: To clear the airbag warning light, you must perform the ‘Setup SDM Primary Key in BCM’ procedure. This synchronizes the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor (BPPS) Recalibration: Some vehicles require the BPPS to be recalibrated after a BCM replacement to ensure accurate brake light operation and stability control function.
Verified Compatibility for Your Vehicle
This module is a direct replacement for a wide range of GM vehicles and part numbers, ensuring a perfect fit and function. Please verify your vehicle is on this list. This unit is compatible with 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, and 95151084.
- Cadillac DTS 2006-2011
- Cadillac CTS 2008-2013
- Cadillac Escalade, ESV, EXT 2010
- Chevrolet Impala 2006-2012
- Chevrolet Equinox 2007-2009
- Chevrolet Tahoe & Suburban 2010
- GMC Acadia 2007-2012
- GMC Yukon & Yukon XL 2010
- Chevy Express / GMC Savana Vans 2008-2012
- Buick Enclave 2008-2012
- Buick Lucerne 2006-2011
- Hummer H2 2008-2009
- And many more…
Frequently Asked Questions
Do I need to do any programming myself?
No. This 2006-2011 DTS Body Control Module arrives at your door pre-programmed to the VIN you provide at checkout. You will, however, need to perform a standard security relearn procedure after installation for the vehicle to start.
What is a security relearn procedure?
It’s a simple process that syncs the new BCM with your vehicle’s anti-theft system. It usually involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. Specific instructions can be found in your owner’s manual.
Will this fix my airbag light?
After installation, the airbag light will likely be on. This is normal. You must have a technician with a capable scan tool perform the ‘Setup SDM Primary Key in BCM’ procedure to synchronize the modules and turn off the light.
Is this part difficult to install?
For someone with basic mechanical skills, it’s a straightforward job. The main challenges are accessing the module’s location (which can be tight) and performing the post-installation relearn procedures. If you are not comfortable with these steps, we recommend professional installation.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. Please double-check it for accuracy to avoid delays.