Are you tired of dealing with baffling electrical issues in your 2007-2011 Chevrolet Avalanche 1500? From flickering dashboard lights to a climate control system with a mind of its own, a failing Body Control Module (BCM) can turn your reliable truck into a source of daily frustration. This replacement BCM, a direct alternative for part number 15263497, is the definitive solution to restore full electrical functionality and peace of mind. As the central command center for your truck’s body electronics, this module governs everything from power windows and door locks to the security system and interior lighting.
We take the guesswork and high costs out of the repair. Each module is expertly programmed to your vehicle’s specific 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, getting you back on the road faster.
Case Study: A Tricky Diagnosis
A customer brought in his ’09 Avalanche 1500 with a laundry list of complaints: the radio would cut out, the driver’s side window wouldn’t go down, and the airbag light was on intermittently. He’d already replaced the battery and checked the main fuses. After hooking up my scanner, I saw a dozen communication codes pointing in different directions. In my 20+ years of experience, when you see that many unrelated electrical gremlins, the BCM is the prime suspect. A faulty BCM can disrupt the entire data network. We swapped in a VIN-programmed module, and every single issue vanished instantly. It’s a classic failure pattern on these GM trucks.
Is Your Avalanche Showing These Electrical Faults?
A failing BCM often creates a cluster of seemingly unrelated problems. If your truck is experiencing any of the following, this module is the likely solution:
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The HVAC blower motor or climate controls are unresponsive.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ The anti-theft or security system malfunctioning, potentially causing no-start conditions.
- ✔ Erratic behavior from interior dome lights, headlights, or tail lights.
- ✔ Unexplained battery drain or communication errors between various vehicle modules.
Your 5-Minute Path to a Fully Functional Truck
Replacing the 2007-2011 Avalanche 1500 BCM is a straightforward job for any DIY enthusiast. It’s located in an accessible spot, and the entire process typically takes less than five minutes.
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on electrical components.
- Locate the BCM: You’ll find the module under the driver’s side dashboard, just to the left of the steering column.
- Remove the Old Module: The BCM is held in place by retaining clips. Simply depress the tabs on the electrical connectors, unplug them, and then release the module from its mounting bracket.
- Install the New BCM: Connect the electrical harnesses to your new, pre-programmed module—they only fit one way. Snap the module securely into the mounting bracket.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: windows, locks, lights, wipers, and HVAC to confirm the repair was successful.
Post-Installation Note: In some cases, the airbag system may require a reset. If the airbag light remains on, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” function. Similarly, a Brake Pedal Position relearn may be required for certain models.
Verified Compatibility for Your GM Truck or SUV
This Body Control Module is a guaranteed fit for a wide range of General Motors vehicles. While this page focuses on the 2007-2011 Avalanche 1500 BCM, it is also a direct replacement for the following models. Please verify your vehicle and part number for a perfect match. This part interchanges with: 25835966, 15263363, 15878753, 15284816, 15943678, 20939137, 22860591, and more.
Frequently Asked Questions
Frequently Asked Questions
Do I need to take my truck to a dealership after installation?
No. This Body Control Module comes pre-programmed to your vehicle’s VIN. This eliminates the need for any additional programming, saving you time and money.
What tools are required for installation?
Installation is very simple and typically requires no tools at all. The module is held by clips and connectors that can be released by hand. A basic wrench may be needed for the battery terminal.
My airbag light is on after installing the new BCM. Is the part defective?
No, this is a normal security procedure on GM vehicles. The new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function.
Is there a core charge for my old part?
There is absolutely no core charge. You can keep your old module without any hassle or need to return it.
Will this BCM fix my truck’s intermittent stalling?
While stalling can have many causes, a failing BCM can absolutely be the culprit, especially if it’s related to the anti-theft system. If you’re also experiencing other electrical issues, replacing the BCM is a very strong diagnostic step.