Restore Full Functionality to Your 2010 Chevrolet Avalanche
Is your 2010 Avalanche 1500 suffering from bizarre electrical problems? Flickering lights, malfunctioning power windows and locks, or a security system that acts on its own are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your truck’s body electronics, and when it fails, it can cause a wide range of frustrating and difficult-to-diagnose issues. This replacement Body Control Module, part number 20864768, is the definitive solution to get your vehicle back in perfect working order.
From the Diagnostic Bay
We once had a 2010 Avalanche roll into the shop with a laundry list of complaints. The owner said the radio would randomly turn off, the dome lights would flicker while driving, and sometimes the power door locks wouldn’t respond to the key fob. A quick scan showed a dozen communication codes (U-codes) pointing to multiple modules. An inexperienced technician might start replacing every part that threw a code, but we know better. These ‘ghost’ codes are classic symptoms of a failing BCM. The BCM acts as a gateway for communication between modules, and when it starts to fail, it floods the network with bad data. We installed a VIN-programmed BCM, cleared the codes, and every single issue was resolved instantly. It saved the customer hundreds of dollars in unnecessary parts and diagnostic time.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ Malfunctioning windshield wipers or horn.
- ✔ Security system faults or the vehicle failing to start due to an anti-theft issue.
- ✔ Warning lights on the dashboard, such as the airbag or ABS light, without a clear cause.
- ✔ Inconsistent instrument cluster gauge operation.
- ✔ Communication errors with diagnostic scan tools.
Why Choose a Programmed 2010 Avalanche BCM?
Replacing a BCM isn’t just a simple swap. A new module from the dealership comes blank and requires specialized tools and subscriptions to program it to your specific vehicle. This process is often costly and requires a trip to the dealer. We eliminate that hassle. By providing us with your vehicle’s VIN (Vehicle Identification Number) during checkout, our technicians will program this module with the latest GM-certified software specific to your 2010 Avalanche. This ensures that all the original features and functions of your truck are restored perfectly.
This is a true plug-and-play solution. Once you receive the module, the primary installation is straightforward for a DIYer with basic tools or any professional mechanic. You simply remove the old BCM—typically located under the steering column—and install the new one. While the core programming is done for you, some vehicles may require simple post-installation relearn procedures.
Post-Installation Procedures
After installing your new 2010 Avalanche BCM, a couple of additional steps, known as relearn procedures, may be necessary to ensure all systems communicate correctly.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM) and must be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: To ensure accurate brake light operation and proper function of the traction control and stability systems, a brake pedal position sensor recalibration might be needed. This is also performed with a capable diagnostic tool.
Please note: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance tailored to your vehicle.
Frequently Asked Questions
What does a Body Control Module do on my 2010 Avalanche?
The BCM is a computer that manages and controls a wide array of your truck’s non-engine related electronic systems. This includes power windows, door locks, interior and exterior lighting, the security system, wipers, and communication between various electronic modules.
Is this BCM difficult to install?
The physical installation is generally straightforward for someone with basic mechanical skills. It’s typically located under the driver’s side dashboard. The main benefit of our service is that we handle the complex programming, making the process as ‘plug-and-play’ as possible. Some post-install relearn procedures may be required.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the module to function in your vehicle.
Will this fix my specific electrical problem?
This module is a direct replacement for a faulty BCM and will resolve issues caused by its failure. While the symptoms listed are common indicators of a bad BCM, we always recommend a proper diagnosis by a qualified technician to confirm the BCM is the root cause before ordering.
What happens if my airbag light comes on after installation?
If the airbag light appears, it simply means the new BCM needs to be electronically ‘introduced’ to your vehicle’s airbag computer (SDM). A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.