Programmed GM BCM 15299986 | VIN Flashed Body Control Module

Tired of Chasing Electrical Gremlins in Your GM Vehicle?

As a technician with over two decades of diagnostic experience, I’ve seen it all. Flickering dashboard lights, power windows with a mind of their own, a security system that won’t let you start your own car, or that dreaded, persistent battery drain. These aren’t just annoyances; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of frustrating and hard-to-diagnose problems. Don’t waste another weekend guessing with a multimeter or pay dealership prices for a complex repair. This is the definitive, reliable solution you’ve been searching for.

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM-spec Body Control Module and flash it with the very latest official GM software, programmed specifically to your vehicle’s VIN. This ensures perfect communication between all your vehicle’s modules, restoring functionality and eliminating the error codes and symptoms caused by a faulty unit. You get an up-to-date, vehicle-specific component without the expensive trip to the dealer for programming.

Is Your GM Vehicle Showing These BCM Failure Signs?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution:

• ✔ Intermittent or non-working power windows, door locks, or mirrors.
• ✔ Erratic or flickering interior and exterior lights.
• ✔ The security or anti-theft light is on, causing a no-start condition.
• ✔ A battery that repeatedly dies overnight due to parasitic draw.
• ✔ Dashboard warning lights (like the airbag light) that won’t turn off.
• ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
• ✔ Horn, wipers, or other accessories activating on their own or not working at all.

A Straightforward Guide to Your BCM Installation

Replacing the BCM is a manageable job for a confident DIYer. While the exact location varies, a little patience is all you need. This guide provides the general steps.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: On most of these GM models, the BCM is located inside the cabin, typically under the driver’s side dash near the steering column or behind a kick panel. On some vans and SUVs, it may be in the center dash area. A quick search for your specific model will confirm its location.
3. Disconnect and Remove: Carefully 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.
4. Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring each one clicks firmly into place.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test your power accessories like windows, locks, and lights.
6. Perform Final Procedures: As noted below, you will need to perform the ‘Setup SDM Primary Key’ procedure with a capable scan tool to clear the airbag light. A brake pedal position sensor relearn may also be required.

Verified Vehicle Compatibility List

This BCM is a direct replacement for a wide range of GM vehicles. Please verify your model and year 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.