Tired of Unpredictable Electrical Problems in Your Avalanche?
Is your 2010 Chevrolet Avalanche 1500 starting to feel haunted? Flickering dash lights, power windows with a mind of their own, or a security system that randomly acts up are all frustrating signs of a failing Body Control Module (BCM). The BCM is the central command center for your truck’s body electronics, and when it starts to go, it can cause a cascade of confusing issues. Stop chasing electrical gremlins and restore your truck’s reliability with this direct-fit, professionally programmed Body Control Module.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- Erratic or non-functional power windows, door locks, or interior lights
- Instrument cluster gauges behaving strangely or not working at all
- The security or anti-theft system preventing the truck from starting
- HVAC (heating and air conditioning) controls not responding
- Warning lights (like the airbag light) staying on for no reason
This module is the definitive solution. We take the guesswork out of the repair by pre-programming this unit to your truck’s specific Vehicle Identification Number (VIN) before we ship it. This means it arrives ready for installation, saving you from expensive programming fees and a time-consuming trip to the dealership. This is the most efficient way to get your programmed 2010 Avalanche 1500 BCM and get your vehicle back to 100%.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: We flash the module with the latest GM software using your VIN. This ensures compatibility and proper function right out of the box.
- ✔ Restores Full Functionality: Get your power accessories, lighting, and security systems working just like they did from the factory.
- ✔ No Core Charge Required: Keep your old module. There are no core fees or hassles with sending the original part back to us.
- ✔ Broad GM Compatibility: While perfect for your Avalanche, this BCM also fits a wide range of other GM vehicles, including the Tahoe, Suburban, Express Van, and Acadia. (See full fitment list below).
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: The Brains of the Operation
Think of the BCM as the vehicle’s central nervous system for everything you interact with inside the cabin. It doesn’t control the engine, but it manages almost everything else—from the chime that reminds you to put on your seatbelt to the complex logic that operates your power locks and anti-theft system. Because it’s so interconnected, a failure can create bizarre symptoms that seem unrelated. That’s why replacing a faulty BCM with a properly programmed 2010 Avalanche 1500 BCM is so critical—it brings order back to the entire system.
Important Post-Installation Information
While this module is programmed for your vehicle, some GM platforms may require one or two final synchronization steps after installation. These procedures require a professional-grade scan tool and may include:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a recalibration of the brake pedal position sensor may be necessary for proper brake light and traction control function.
We are providing the correct, fully programmed part. These additional steps are part of the vehicle’s security and safety architecture when a new module is introduced. Getting a programmed 2010 Avalanche 1500 BCM is the crucial first step to a successful repair.
Guaranteed Fitment For Part Number 20921436 and More
This module is a direct replacement for a wide range of part numbers, including: 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, and 95151084.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we have your VIN to program it.
Is this BCM difficult to install?
The physical installation is typically straightforward for someone with moderate DIY skills. The BCM is usually located under the driver’s side dashboard. The main challenge is accessing it. However, please be aware that post-installation electronic procedures, like an airbag system sync, may be required and need a professional scan tool.
Do I need to send my old BCM back?
No. This purchase has no core charge. You can keep, discard, or recycle your original module at your convenience.
Will this fix my specific problem?
This module will fix issues that are directly caused by a failing BCM. While the symptoms we’ve listed are very common for BCM failure, we always recommend a proper diagnosis by a qualified technician to confirm the BCM is the root cause of your problems before ordering.
What if the airbag light is on after I install it?
This is a normal security procedure on many GM vehicles. The new BCM needs to be electronically ‘introduced’ to the vehicle’s airbag control module (SDM). A repair shop with a high-end scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is this a new or used part?
This is a quality, inspected, and tested used OEM component. Each unit is verified to be fully functional before being programmed with the latest software for your vehicle’s VIN.