Restore Full Functionality to Your Vehicle’s Electronics

Are you dealing with baffling electrical issues in your Cadillac or GM vehicle? Intermittent power windows, flickering dash lights, a security system that acts up, or a battery that drains overnight are all classic signs of a failing Body Control Module (BCM). As the central hub for your car’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating ordeal. In my 20+ years of diagnostic work, I’ve seen how a single failing module can mimic a dozen different problems, leading to wasted time and money on incorrect repairs. This is the definitive solution.

This listing is for a replacement Body Control Module, part number 15948439, which will be professionally prepared for your specific vehicle through our expert cloning service. This isn’t just a part; it’s a complete, ready-to-install fix. By transferring the data from your original BCM to this replacement unit, we eliminate the need for expensive and time-consuming dealership programming. You get a true plug-and-play solution that restores the precise functions your vehicle had when it left the factory.

Is Your Cadillac Exhibiting These BCM Failure Signs?

A failing BCM can cause a wide range of symptoms. If you’re experiencing any of the following, your 2010 STS Body Control Module is likely the culprit:

• ✔ Erratic or non-functional power windows, door locks, and mirrors.
• ✔ Interior dome lights or dashboard lights flickering or staying on.
• ✔ The anti-theft or security system engaging randomly, preventing the car from starting.
• ✔ Unexplained battery drain that leaves you with a dead battery.
• ✔ Warning messages on the driver information center (DIC) like “Service Electrical System”.
• ✔ Communication error codes, often in the U-series (e.g., U0140, U0155) or B-series (e.g., B1001, B1327).

Your Straightforward BCM Installation Guide

Our cloning service makes this repair accessible for both seasoned mechanics and capable DIYers. Here is a general guide to the process:

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
2. Locate the BCM: On the 2010 Cadillac STS, the BCM is typically located in the center dash area. For other models, its position can vary (e.g., under the steering column, behind the dash). A quick search for your specific model will confirm the location.
3. Remove Trim & Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of all screws and clips.
4. Disconnect and Remove: 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.
5. Install the New Module: Mount the replacement BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
6. Reassemble and Reconnect: Reinstall any trim panels you removed. Reconnect the negative battery terminal.
7. Perform Post-Install Procedures: Start the vehicle and check all functions. As noted in our technical information, you may need a professional scan tool to perform a Brake Pedal Position Relearn or an Airbag System Sync if warning lights are present.

Verified Fitment for a Wide Range of GM Vehicles

This BCM is compatible with a vast array of General Motors vehicles. Please verify your original part number against our list below. This unit 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. It fits models including, but not limited to:

Note: Always confirm fitment by location and specific ID numbers where applicable, as noted in the original fitment list.