Restore Full Functionality to Your GM Vehicle

Are you dealing with baffling electrical issues in your GM car, truck, or SUV? Flickering interior lights, power windows with a mind of their own, or a security system that randomly goes off can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. I’ve spent over two decades under the hood and behind the diagnostic computer, and I can tell you that a failing BCM is one of the most common sources of these electrical gremlins.

This isn’t just a replacement part; it’s a complete solution. We take the hassle out of the repair by programming this module specifically for your vehicle using your VIN. This means it arrives at your door ready for installation, loaded with the latest GM software updates to ensure optimal performance and communication with your vehicle’s other systems. You get a reliable fix without the exorbitant cost and scheduling headaches of a dealership visit.

Is Your Vehicle Showing These Symptoms?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your BCM may need replacement:

• ✔ Intermittent or non-working power windows, door locks, or mirrors.
• ✔ Interior or exterior lights flickering, staying on, or not working at all.
• ✔ The security system or horn activating randomly.
• ✔ A persistent battery drain that kills your battery overnight (parasitic draw).
• ✔ Erratic behavior from the instrument cluster gauges or warning lights.
• ✔ Communication error codes, such as U0140, on a diagnostic scan.
• ✔ The vehicle’s remote keyless entry system failing to operate correctly.

A Straightforward Guide to Your BCM Installation

Replacing your GM Body Control Module is a manageable job for a confident DIYer. While the exact location varies by model (check your fitment details below), the general process is similar. Always prioritize safety.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
2. Locate the BCM: The module is typically found under the driver’s side or center of the dashboard, or behind a kick panel. Consult your vehicle’s service manual for the precise location.
3. Disconnect and Remove: Carefully unplug all 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.
4. Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Securely reconnect all electrical connectors, ensuring they click into place.
5. Reconnect Power: Reattach the negative battery terminal.
6. Perform Final Checks: Start the vehicle and test all body functions: lights, windows, locks, wipers, and radio. Check the dashboard for any new warning lights.

Post-Installation Procedures & Considerations

Your new BCM comes pre-programmed to your VIN, which handles the majority of the setup. However, in some GM vehicles, additional system handshakes may be required after installation. This is a normal part of the process.

• Airbag System Sync: If the airbag warning light is illuminated after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
• Brake Pedal Position Relearn: On certain models, the Brake Pedal Position (BPP) sensor may need to be recalibrated. This is essential for proper brake light and traction control operation and also requires a compatible scan tool.
• No Core Charge: We make it simple. There is no core charge on this module. You can keep your old part.

Disclaimer: Vehicle systems vary. For procedures specific to your exact model, always refer to a factory service manual or consult with a certified automotive technician.

Verified Compatibility for Your Vehicle

This GM Body Control Module is a direct replacement for a wide range of vehicles and part numbers. Please verify your model and original part number below to ensure proper fitment. This module is compatible with 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, and 95151084.