Restore Your Cadillac’s Electrical System with a Plug-and-Play BCM

Is your 2006-2011 Cadillac DTS acting possessed? Flickering lights, intermittent power windows, a security system that won’t behave, or strange warning messages on the dash are all classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. It’s the component responsible for translating your commands—like flipping a switch or pressing a button—into actions. When it fails, your car’s comfort and convenience features become unreliable.

This isn’t just an inconvenience; it can be a safety issue. A malfunctioning BCM can affect your exterior lighting, door locks, and even the theft-deterrent system. Don’t let these problems persist. We offer a reliable, cost-effective solution: a replacement BCM, part number 20935349, that arrives at your door fully programmed to your vehicle’s specific VIN. This means you can bypass the expensive trip to the dealership for programming. We handle the complex part, so you can get your luxury sedan back to factory-fresh functionality.

Is Your Cadillac Showing These Symptoms?

• ✔ Erratic or non-functional interior and exterior lights.
• ✔ Power windows, door locks, or mirrors working intermittently.
• ✔ The security system engaging randomly or the car alarm going off for no reason.
• ✔ Key fob not being recognized or functioning properly.
• ✔ Warning lights on the dashboard, especially for the airbag or traction control system after a battery disconnect.
• ✔ Diagnostic trouble codes (DTCs) indicating loss of communication, such as U0140, U0155, or U0164.
• ✔ A/C and climate control functions not responding correctly.

A Straightforward Guide to BCM Installation

Replacing the BCM in your Cadillac DTS is a manageable job for a confident DIYer. The module is typically located behind the right-hand side of the dashboard. While specific steps can vary, here is a general guide to get you started.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10-15 minutes to allow all systems to power down completely.
2. Access the Module: You will likely need to remove the glove box or a lower dash panel on the passenger side to gain access to the BCM. It’s often secured with a few small bolts or clips.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. These connectors have locking tabs that must be depressed to be released. Never pull on the wires themselves. Once disconnected, remove the old module.
4. Install the New BCM: Mount your new, pre-programmed BCM in the same location and reconnect all the electrical harnesses. Ensure each connector clicks securely into place.
5. Reconnect and Test: Reinstall any panels you removed, then reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, windows, locks, radio, and wipers to confirm the repair.

Important Post-Installation Information

Because this 2006-2011 DTS BCM arrives programmed, most functions should work immediately. However, on some vehicles, additional synchronization steps may be required:

• Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional bi-directional scan tool to sync the airbag system with the new BCM.
• Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be necessary to ensure correct brake light and traction control operation. This can also be performed with a capable scan tool.
• No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.

Guaranteed Vehicle Compatibility

This module is a direct replacement for a wide range of GM vehicles and part numbers. While it is the correct part for the 2006-2011 DTS BCM replacement, it also fits many other cars, trucks, and vans. Please verify your original part number against our cross-reference list below to ensure perfect compatibility.

Primary Fitment: Cadillac DTS (2006-2011)

This part is a direct replacement for the following 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.

This module also fits models such as the Chevrolet Impala, Equinox, Express Van, GMC Acadia, Savana Van, Buick Lucerne, and more. Always confirm your part number or consult your mechanic.