Restore Full Electrical Function to Your Cadillac DTS
If you’re dealing with bizarre electrical gremlins in your 2006-2011 Cadillac DTS—flickering lights, a battery that dies overnight, or power accessories with a mind of their own—you’re likely facing a failing Body Control Module (BCM). As the central hub for your car’s body electronics, a faulty BCM can turn your luxury vehicle into a source of constant frustration. This isn’t just an inconvenience; it can affect vehicle security and safety. This replacement Body Control Module is your direct-fit, reliable solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward installation.
Case Study: A Tricky Diagnosis
I once had a 2008 Cadillac DTS in my bay that was a real head-scratcher. The customer complained of an intermittent no-start and a security light that would flash randomly. The battery and alternator tested fine. After hooking up my scan tool, I found a slew of U-codes (communication errors) pointing to a network breakdown. In these GM platforms, the BCM is the gateway for many modules. After tracing the wiring and finding no faults, we determined the BCM itself was failing internally, corrupting the data bus. Replacing it with a VIN-programmed unit like this one instantly cleared all communication faults and restored the vehicle’s function. It’s a classic failure I’ve seen dozens of times.
Common Signs of a Failing 2006-2011 DTS BCM
A failing BCM is the culprit behind many electrical issues. If your Cadillac is experiencing any of the following, it’s time to consider a replacement. Here are some of the most common symptoms I’ve diagnosed in my shop:
- ✔ Unexplained battery drain, even when the car is off.
- ✔ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔ The security system acting up, preventing the car from starting.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating without a clear cause.
- ✔ Horn sounding unexpectedly or not working when needed.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
A Straightforward Guide to Your BCM Replacement
Installing your new BCM is a manageable job for a confident DIYer. Because we pre-program the module to your VIN, you can skip the expensive trip to the dealership for software flashing. For the 2006-2011 Cadillac DTS, the BCM is typically located behind the right-hand side of the center dash.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. On the DTS, this is usually on the passenger side of the center console area.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses.
- Final Steps: Reassemble your dash panels and reconnect the negative battery terminal. Start the vehicle to confirm that the primary functions are restored.
Important Post-Installation Note: While this module is programmed for your vehicle, some models may require additional relearn procedures. A Brake Pedal Position Relearn might be necessary for proper brake light and traction control operation. If the airbag light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a security handshake between the new BCM and the existing airbag system.
Will This Fit My Vehicle?
This BCM is a guaranteed fit for the 2006-2011 Cadillac DTS (located at the RH center dash) and is a direct replacement for a wide range of GM part numbers. It also fits many other vehicles. Please verify your part number or vehicle in the list below.
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: Acadia (07-12), Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), Enclave (08-12), Equinox (07-09), Escalade (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban/Tahoe/Yukon (10), Torrent (07-09), Traverse (09-12), Vue (08-10).
Frequently Asked Questions
Frequently Asked Questions
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options your Cadillac DTS came with from the factory. This ensures all features work correctly and makes installation much simpler.
Is this part difficult to install?
For someone with basic mechanical skills, the physical replacement is straightforward. The main challenge is accessing the module’s location. Our VIN programming service eliminates the most difficult step: the software flashing required by dealerships.
What happens if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag module (SDM). A mechanic with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. If you have a check engine light, the problem is more likely with the Engine Control Module (ECM/PCM) or a sensor. A BCM failure usually causes issues with lights, locks, windows, and security.