Restore Full Functionality to Your GM Vehicle

If you’re dealing with bizarre electrical issues in your 2010 Cadillac STS—like power windows with a mind of their own, dashboard lights flickering randomly, or a security system that prevents the car from starting—the Body Control Module (BCM) is the most likely culprit. As the central command center for your vehicle’s body electronics, a failing BCM can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just an annoyance; it can affect vehicle safety and security. This listing offers a dependable, streamlined solution: a replacement BCM programmed specifically for your vehicle’s VIN.

Is Your Vehicle Exhibiting These BCM Failure Symptoms?

A failing Body Control Module can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your BCM needs attention. A proper diagnosis with a professional scan tool can confirm the issue, often revealing codes like U0140, B1001, or other communication and internal module faults.

• ✔ Intermittent or non-functional power windows, door locks, or interior lights.
• ✔ The security or anti-theft system light stays on, preventing the engine from starting.
• ✔ Erratic behavior from the instrument cluster gauges or warning lamps.
• ✔ Headlights or taillights not working correctly, even with good bulbs.
• ✔ Key fob not responding or intermittent remote start failure.
• ✔ False warnings for tire pressure, traction control, or other systems.
• ✔ A flurry of network communication DTCs (U-codes) stored in various modules.

Your Straightforward BCM Installation Guide

Installing your new BCM is a manageable task for a confident DIYer or any professional technician. Our VIN programming service makes this process significantly easier than installing a blank module from the dealer.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
2. Locate the BCM: On the 2010 Cadillac STS, the BCM is typically located in the center dash area. For other models, it may be under the steering column or behind the dash on the driver’s or passenger’s side. Consult your service manual for the exact location.
3. Remove the Old Module: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or a lever that needs to be swung over to release the connector. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
4. Install the New Module: Mount the new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
5. Reconnect the Battery: Reattach the negative battery terminal.
6. Perform Post-Install Procedures: Start the vehicle and check for proper function of all body electronics. As noted below, some vehicles may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ with a capable scan tool to clear specific warning lights.

Verified Fitment for Your General Motors Vehicle

This module is a direct replacement for a wide range of GM cars, trucks, and SUVs. Please verify your part number is on this list. This unit is compatible with part number 20839063 and the following interchangeable numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084.

Fits Models Including:

Frequently Asked Questions