Programmed GM BCM 15819552 Body Control Module | VIN Flashed

Restore Your Vehicle’s Electrical System with a VIN-Programmed BCM

Are you tired of chasing electrical gremlins in your GM car, truck, or van? From power windows that have a mind of their own to dashboard lights flickering randomly, a failing Body Control Module (BCM) can cause some of the most frustrating and difficult-to-diagnose issues. As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can sideline a perfectly good vehicle. It’s the nerve center for your vehicle’s comfort and convenience features, and when it fails, chaos ensues.

This isn’t just a replacement part; it’s a complete solution. We take the guesswork and dealer-dependency out of the repair. Simply provide us with your vehicle’s VIN during checkout, and we will program this BCM with the latest official GM software specific to your car. This ensures seamless integration and restores functionality right out of the box, saving you from costly programming fees and the hassle of scheduling a dealership visit. This is the same reliable process we use in our own repair facility to get customers back on the road quickly and safely.

Common Signs of a Failing GM BCM

If your vehicle is exhibiting any of these symptoms, a faulty BCM is a likely culprit. Replacing it can often resolve multiple issues simultaneously.

• ✔ Erratic or non-functional power windows, door locks, or mirrors.
• ✔ Interior dome lights or exterior lights staying on or not working at all.
• ✔ The security or anti-theft light flashing, preventing the engine from starting.
• ✔ Inaccurate or dead gauges on the instrument cluster.
• ✔ Horn sounding unexpectedly or not working when pressed.
• ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
• ✔ Key fobs that stop working intermittently or altogether.

Your Straightforward BCM Installation Guide

For many models, replacing the BCM is a manageable job for a confident DIYer. While the exact location varies, this general guide will help you through the process.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
2. Locate the BCM: The BCM is typically found inside the cabin, often under the driver’s or passenger’s side of the dashboard, or behind the center console. A quick search for your specific model will confirm its location.
3. Remove Connectors: Carefully unplug all the electrical connectors from the old BCM. They have locking tabs that need to be depressed to be released. Do not force them.
4. Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and set it aside. Mount your new, pre-programmed BCM in its place.
5. Reconnect Everything: Plug all electrical connectors firmly into the new module. You should hear a ‘click’ as they lock into place. Reconnect the negative battery terminal.
6. Test Functions: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair was successful.

Post-Installation Verifications

Your new BCM is programmed to work upon installation, but in some cases, your vehicle may require a simple relearn procedure to sync with other modules. This is a normal part of the process.

• Airbag System Sync: If your airbag warning light is illuminated after installation, a scan tool procedure called “Setup SDM Primary Key in BCM” is needed to sync the systems. This is only required if the light is on.
• Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be necessary to ensure correct brake light and traction control operation.

Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.

Verified Fitment For Your Vehicle

This module is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers, ensuring you get the right component. Please verify your vehicle is on the list below. This part replaces the following 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.