Restore Your Vehicle’s Electrical Functions with a Programmed GM Body Control Module

Are you dealing with baffling electrical problems in your GM vehicle? Flickering lights, malfunctioning power windows or door locks, a security system that acts up, or even a car that refuses to start? These aren’t just annoyances; they’re 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 chaos. In my 20+ years of experience, I’ve seen how a bad GM Body Control Module can mimic a dozen other problems, leading to frustrating and expensive diagnostic dead ends.

This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional cloning service that makes this repair straightforward. Simply send us your original BCM, and we will transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. When you receive it back, it’s ready for installation without needing a trip to the dealer for expensive programming. We handle the complex part so you can get your vehicle back to 100% functionality quickly and affordably.

Is Your Vehicle Showing These BCM Failure Signs?

A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your GM Body Control Module needs attention:

• ✔ Erratic interior or exterior lights (flickering, staying on, or not working at all).
• ✔ Power windows, locks, or mirrors behaving unpredictably or failing completely.
• ✔ The anti-theft or security system light is illuminated, preventing the engine from starting.
• ✔ The horn sounds randomly or doesn’t work when pressed.
• ✔ Dashboard warning lights (like Airbag or ABS) are on for no apparent reason.
• ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.

A Straightforward Guide to Installation

With our cloning service, the physical swap is something a confident DIYer or any professional mechanic can handle. Here’s a general outline of 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 most of these GM models, the BCM is located under the driver’s side of the dashboard, near the steering column or behind the kick panel. On some vans or SUVs, it might be in the center dash area.
3. Remove Connectors: Carefully unplug all the electrical connectors from the old BCM. They have locking tabs, so be gentle to avoid breaking them.
4. Swap the Module: Unbolt the old BCM and remove it. Mount the new, programmed module in its place and secure it.
5. Reconnect Everything: Plug all the electrical connectors firmly back into the new BCM. Reconnect the negative battery terminal.
6. Perform Relearns: Start the vehicle. As noted in our post-install procedures, you may need a professional scan tool to perform an ‘Airbag System Sync’ or a ‘Brake Pedal Position Relearn’ if related warning lights appear.

Verified Vehicle Compatibility

This module is a direct replacement for a wide range of GM cars, trucks, and SUVs. It is compatible with 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, and 95151084. Please check the detailed list below to confirm your specific model and year.

Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.