Tired of Unpredictable Electrical Problems in Your Avalanche?
If you’re dealing with a 2007-2011 Chevrolet Avalanche 1500 that seems to have a mind of its own—with flickering lights, a dead HVAC system, or power windows that refuse to work—a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your truck’s body electronics. When it malfunctions, it can cause a cascade of frustrating and seemingly unrelated issues. This VIN-programmed BCM, a direct replacement for part number 15263497, is the definitive solution to restore your truck’s functionality and your peace of mind.
Is Your Avalanche Showing These Electrical Faults?
- ✔ Unresponsive or intermittent climate controls (HVAC) and blower motor issues.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Power accessories failing, such as door locks, interior/exterior lights, or windows.
- ✔ Security system errors, causing no-start conditions, stalling, or random alarms.
- ✔ A variety of communication codes or body-related DTCs stored in the system.
A Technician’s Notebook
A customer brought in his ’09 Avalanche 1500 last month with a persistent airbag light and the radio cutting out. He’d already replaced the battery and checked fuses, but the problems remained. We scanned it and pulled a B1001 code. In my 20+ years of experience, a B1001 almost always points to a communication failure within the BCM itself. We installed one of our pre-programmed BCMs, performed the quick SDM key relearn, and all the electrical gremlins vanished. It’s a common failure point on these GM trucks, but thankfully, it’s a straightforward fix with the right part.
Your 5-Minute Installation Guide
Getting your truck back to normal is easier than you think. No need to schedule a costly dealership visit. Just follow these simple steps.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On your Avalanche, the Body Control Module is conveniently located under the driver’s side dashboard, near the steering column.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. Remove the mounting bolts or clips, take out the old module, and install the new one in its place. Reconnect the electrical harnesses.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Relearns: This step is critical. To clear the airbag light, you must use a capable scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Some vehicles may also require a Brake Pedal Position Sensor recalibration. These ensure all safety systems are operating correctly.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct replacement for part number 15263497 and is interchangeable with a wide range of other part numbers, including: 25844480, 25835966, 15263363, 15878753, 15284816, 15943678, 15926094, 20939137, and more. It is guaranteed to fit the following models:
- Chevrolet Avalanche 1500: 2007, 2008, 2009, 2010, 2011
- Chevrolet Silverado 1500/2500/3500: 2007-2013
- Chevrolet Suburban 1500/2500: 2007-2011
- Chevrolet Tahoe: 2007-2011
- GMC Sierra 1500/2500/3500 & Denali: 2007-2013
- GMC Yukon & Yukon XL: 2007-2011
- Cadillac Escalade, ESV, EXT: 2007-2011
Frequently Asked Questions
Do I need to program this 2007-2011 Avalanche 1500 BCM?
No. We pre-program the module to your vehicle’s specific VIN before shipping. This ensures it works right out of the box without any need for expensive dealership programming.
Why is my airbag light still on after installing the new BCM?
After installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This synchronizes the new BCM with your vehicle’s airbag system (Sensing and Diagnostic Module). This must be done with a bi-directional scan tool and is a necessary safety step.
What tools are needed for the installation?
Basic hand tools are all you need to physically swap the module. However, you will need access to a professional-grade scan tool capable of performing the SDM key relearn and brake pedal recalibration procedures.
Where is the BCM located on my truck?
The BCM is typically found under the driver-side dashboard, to the left of the steering column. It’s usually accessible without removing many panels.
Will this fix my intermittent power window and door lock issues?
Yes, in most cases. The BCM directly controls these functions. If your windows, locks, and lights are acting erratically, a failing BCM is the most common cause, and replacing it will resolve these problems.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or dispose of it without the hassle of sending it back.