Restore Full Electrical Function to Your Cadillac DTS
If you’re dealing with bizarre electrical gremlins in your 2006-2011 Cadillac DTS, you’ve come to the right place. As a technician with over two decades of diagnostic experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a luxury vehicle into a source of constant frustration. The BCM is the central nervous system for your car’s comfort and convenience features—from power windows and locks to the security system and interior lighting. When it starts to fail, the symptoms can be maddeningly inconsistent.
This isn’t just a replacement part; it’s a complete solution. We take a genuine GM module and program it with the latest GM software updates specifically for your vehicle using the VIN you provide. This critical step ensures that the module communicates flawlessly with your car’s other computers, eliminating the need for expensive dealership programming. You get a reliable part that’s ready for installation right out of the box, getting your Cadillac back to the way it should be.
A Technician’s Notebook: The DTS with a Mind of Its Own
A customer brought in a 2009 Cadillac DTS with a laundry list of complaints: the radio would shut off randomly, the driver’s side power window worked only when it wanted to, and the security light would flash for no reason, sometimes draining the battery overnight. They had already replaced the battery and checked the alternator. After connecting my scan tool, I found multiple U-codes (communication errors) pointing to a network problem originating with the BCM. Instead of a costly diagnostic rabbit hole, we installed a VIN-programmed 2006-2011 DTS Body Control Module. The fix was immediate, resolving all electrical issues and saving the customer hundreds in diagnostic labor and dealer programming fees.
Is Your Cadillac DTS Showing These Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit:
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system acting up, causing alarm or starting issues.
- ✔ The key fob not working reliably.
- ✔ Dashboard warning lights related to body systems are illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors (U-codes) or specific body circuits (B-codes).
Your Straightforward BCM Installation Guide
For the handy DIYer or professional mechanic, swapping the BCM is a manageable job. On the 2006-2011 DTS, the BCM is located behind the glove box on the right-hand side of the center dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Access the Module: Open the glove box and release the stoppers to let it swing down completely, giving you access to the area behind it. You may need to remove a kick panel or trim piece.
- 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 BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair.
- Post-Installation Steps: In some cases, additional relearn procedures may be needed. If the airbag light is on, an “Airbag System Sync” is required. A “Brake Pedal Position Relearn” may also be necessary for proper brake light and traction control operation. These procedures typically require a professional-grade scan tool.
Guaranteed Vehicle Compatibility
This module is a direct replacement for part number 15872421 and is guaranteed to fit your 2006-2011 Cadillac DTS. It is also a compatible replacement for numerous other part numbers and fits a wide range of GM vehicles. Please verify your part number or consult the list below.
Fits Models Including:
ACADIA 07-12, AVALANCHE 1500 10, CAPRICE 11-13, CAPTIVA SPORT 12, CTS 08-13, DTS 06-11, ENCLAVE 08-12, EQUINOX 07-09, ESCALADE 10, ESCALADE ESV 10, ESCALADE EXT 10, EXPRESS VANS 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SAVANA VANS 08-12, SRX 07-09, STS 10, SUBURBAN 1500 10, TAHOE 10, TORRENT 07-09, TRAVERSE 09-12, VUE 08-10, YUKON 10, YUKON XL 1500 10 (Please verify specific options/IDs as listed in the original fitment data for these models).
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. This is the biggest benefit of our service. We program the module to your car’s specific VIN before we ship it to you. It arrives ready to be installed, saving you time and the high cost of dealership programming.
Where is the BCM located on my 2008 Cadillac DTS?
On the 2006-2011 Cadillac DTS, the Body Control Module is located on the right-hand side of the center dash, accessible by lowering or removing the glove box compartment.
Is there a core charge? Do I have to send my old part back?
No, there is absolutely no core charge for this part. You can keep your old module, which saves you the hassle and expense of return shipping.
What if the airbag light comes on after I install the new BCM?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ will need to be performed with a professional-grade scan tool to resolve it.
Will this fix my specific electrical problem?
This 2006-2011 DTS Body Control Module is the definitive solution for a very wide range of electrical issues controlled by the BCM. If you are experiencing problems with power accessories, lighting, or security systems, a faulty BCM is the most common cause.