2007-2010 Sierra Denali Body Control Module 15284816 Programmed To Your VIN BCM

Solve Your Truck’s Electrical Gremlins for Good

As a technician with over two decades of experience, I’ve seen countless GMC and Chevy trucks roll into the bay with baffling electrical problems. One minute the A/C works, the next it doesn’t. The power windows have a mind of their own, and a persistent airbag light refuses to turn off. More often than not, the culprit is a failing Body Control Module (BCM). It’s the central command for your truck’s comfort and convenience features, and when it goes, it can create a cascade of frustrating issues. This isn’t just an annoyance; it can be a safety concern when exterior lights or security systems malfunction.

This OEM-quality Body Control Module, a direct replacement for part number 15284816, is the definitive solution. We pre-program it to your truck’s specific Vehicle Identification Number (VIN) before shipping. This means you can skip the expensive trip to the dealership for programming. It arrives ready for a true plug-and-play installation, restoring full functionality to your vehicle’s essential systems and getting you back on the road with confidence.

Is Your Sierra Denali Showing These Symptoms?

A faulty BCM can manifest in numerous ways. If your truck is experiencing any of the following, a failing BCM is the likely cause:

• ✔ The airbag warning light is illuminated, often with a DTC B1001 stored in the system.
• ✔ HVAC controls are unresponsive, or the blower motor works only intermittently or not at all.
• ✔ Power windows, door locks, or interior/exterior lights operate erratically or have stopped working completely.
• ✔ The vehicle’s security system is malfunctioning, leading to no-start conditions or random alarm activation.
• ✔ You’re experiencing unexplained stalling, engine misfires, or other issues pointing to a communication breakdown between modules (DTCs like U0100, U0140).
• ✔ Poor ground symptoms that can’t be traced to a physical ground point under the hood or dash.

Your 5-Minute Path to a Fully Functional Truck

For most DIYers and professional mechanics, installing this 2007-2010 Sierra Denali Body Control Module is a quick and straightforward job. No complex wiring or special tools are needed for the physical replacement.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
2. Locate the BCM: On most GMT900 platform trucks like the Sierra, Tahoe, and Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large electrical connectors.
3. Swap the Module: Carefully unplug the electrical connectors. They have locking tabs, so be sure to depress them fully before pulling. Remove any mounting screws or clips holding the old BCM in place and install the new module.
4. Reconnect and Test: Secure the new BCM, plug in all the connectors firmly, and reconnect your battery terminal. Start the vehicle and test all functions: lights, wipers, locks, windows, and HVAC.
5. Post-Installation Relearn (Critical): If your airbag light was on (DTC B1001), it will likely remain on. You MUST use a bi-directional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Some vehicles may also require a ‘Brake Pedal Position Sensor Calibration’ to ensure proper brake light function and stability control performance.

Verified Fitment for Your GM Truck or SUV

This module is a direct replacement for part number 15284816 and is interchangeable with a wide range of other GM part numbers, ensuring broad compatibility. It is guaranteed to fit the following vehicles:

This part is a confirmed replacement for the following part numbers: 25844480, 25835966, 15263363, 15263497, 15878753, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591.