Tired of Chasing Electrical Gremlins in Your GM Truck?
If your 2007-2010 GMC Sierra Denali is acting possessed—with flickering lights, a dead climate control panel, or power accessories that have a mind of their own—the problem often traces back to a single component: the Body Control Module (BCM). As the central command center for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and hard-to-diagnose issues. This OEM-quality replacement, part number 15284816, is the definitive solution, arriving expertly programmed to your vehicle’s VIN for a true plug-and-play fix.
A Technician’s Notebook: The Case of the Spooky Sierra
I once had a 2008 Sierra 2500 in my bay that was driving its owner crazy. The radio would randomly shut off, the dome light wouldn’t work, and the airbag light was on with a B1001 code. The owner had already replaced a ground strap and the battery, with no luck. After confirming solid power and ground at the BCM connector, the diagnosis was clear. The internal logic of the original module had failed. We installed one of our VIN-programmed BCMs, and within 10 minutes, every single issue was resolved. It’s a classic failure on these GMT900 platforms, and a pre-programmed module is the fastest path back to reliability.
Is Your Sierra Denali Showing These Telltale Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Unresponsive or intermittent HVAC controls, including a blower motor that won’t turn on.
- ✔ An illuminated airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Power windows, door locks, or exterior lights that work sporadically or not at all.
- ✔ Malfunctions with the anti-theft or security system, leading to no-start conditions.
- ✔ Strange electrical behavior like wipers activating on their own or instrument cluster glitches.
Installing this replacement 2007-2010 Sierra Denali BCM is the most effective way to permanently correct these problems and restore full functionality to your truck’s accessories.
A Straightforward Guide to Your BCM Installation
One of the best features of this module is its simple, DIY-friendly installation process. No need to schedule a costly trip to the dealership for programming. Just follow these steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the Module: The BCM is typically found in the driver’s footwell, mounted to the left of the steering column. You may need to remove a lower dash panel for access.
- Swap the Connections: Carefully unplug the electrical connectors from your old BCM and transfer them to the new module. The connectors are color-coded and keyed to prevent mistakes.
- Secure and Test: Mount the new BCM in the original location, reconnect your battery, and start the vehicle. Test all functions like lights, locks, windows, and HVAC to confirm the repair.
- Post-Install Checks: In some cases, an airbag light may persist. This requires an ‘SDM Key Setup’ procedure with a professional scan tool. A ‘Brake Pedal Position Relearn’ may also be needed for certain models.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15284816 and interchanges with many other GM part numbers, ensuring a perfect fit for a wide range of vehicles. While this is the correct 2007-2010 Sierra Denali BCM, it also fits the following models (please verify your specific options):
- Chevrolet Avalanche (2007-2011)
- Chevrolet Silverado 1500/2500/3500 (2007-2013)
- Chevrolet Suburban 1500/2500 (2007-2011)
- Chevrolet Tahoe (2007-2011)
- GMC Sierra 1500/2500/3500 (2007-2013)
- GMC Yukon & Yukon XL (2007-2011)
- Cadillac Escalade, ESV, EXT (2007-2011)
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It reads inputs from switches (like your window or headlight switch) and sensors, and then activates the corresponding components (like the window motor or headlights).
Is this part really plug-and-play?
Yes! We program the module to your vehicle’s specific VIN before shipping. This ensures it communicates correctly with your truck’s other systems right out of the box, with no dealership visit required.
What if my airbag light is still on after installation?
If the airbag light remains on, it’s because the new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). This is done using a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by most professional repair shops with an advanced scan tool.
Do I need to return my old BCM? (Core Charge)
No. There is no core charge for this part. You can keep your old module, saving you the time and hassle of a return shipment.
How can I be sure this fits my truck?
The best way is to match the part number from your original module. This BCM replaces part number 15284816 and many others listed in the product details. If you’re unsure, contact us with your VIN, and our experts will verify the fitment for you.