Restore Full Functionality to Your Truck with a VIN-Programmed BCM
If you’re dealing with baffling electrical problems in your 2010 Chevrolet Avalanche—like flickering interior lights, power windows with a mind of their own, or a security system that won’t cooperate—you’re likely facing a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable issues. This isn’t just an annoyance; it can affect vehicle security and the proper function of safety-related lighting. This module is the definitive, reliable solution to get your truck’s systems communicating correctly again.
We take the guesswork and high costs out of the repair. Unlike a trip to the dealership, which involves expensive diagnostic time and programming fees, this BCM arrives at your door ready for installation. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash the module with the latest GM software specific to your Avalanche. This ensures seamless integration with your truck’s existing systems, saving you hundreds of dollars and significant downtime.
From the Diagnostic Bay: The Case of the Phantom Battery Drain
I remember a 2010 Avalanche that came into my shop with a classic BCM failure story. The owner was frustrated because his battery would be dead every few mornings. He’d already replaced the battery and alternator. After hooking up my multimeter, I found a significant parasitic draw. The culprit? The BCM wasn’t properly putting all the accessory circuits to sleep after the key was off. It was a slow, silent drain. Installing a correctly programmed 2010 Avalanche BCM not only fixed the immediate electrical gremlins but also solved the phantom battery drain that was costing him time and money.
Is Your Avalanche Showing These BCM Failure Signs?
A failing BCM often sends out distress signals. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ A security system that falsely triggers or prevents the engine from starting.
- ✔ The “Service Theft System” or other warnings on the driver information center.
- ✔ Intermittent operation of the radio or climate controls.
- ✔ Diagnostic trouble codes (DTCs), especially communication codes like U0140, U0155, or U0100.
Your Straightforward BCM Installation Guide
Replacing the 2010 Avalanche BCM is a manageable job for a confident DIYer. The module is typically located under the driver’s side of the dashboard, near the steering column. While specific steps can vary, here is a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: On the 2010 Avalanche, you’ll find the BCM mounted to the left of the steering column, often behind a lower dash panel. You may need to remove a plastic trim piece for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test your lights, locks, and windows to confirm functionality.
- Perform Relearn Procedures: As noted below, you may need to perform a Brake Pedal Position Relearn or an Airbag System Sync if you see any related warning lights. This is a normal part of the process.
Important Post-Installation Information
This module is designed for a simple installation, but modern vehicles require systems to re-synchronize after a major component is replaced. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a scan tool procedure called “Setup SDM Primary Key in BCM” is required to sync the new BCM with the airbag system. This is a security measure and ensures the system is fully operational.
- Brake Pedal Position Relearn: Some vehicles may require a brake pedal position sensor relearn to ensure accurate brake light and traction control operation. This is also performed with a compatible diagnostic tool.
- No Core Charge: We do not require you to send your old BCM back. There is no core charge, saving you time and return shipping costs.
Verified Vehicle Compatibility List
This BCM is a direct replacement for part number 25826125 and a wide range of other GM part numbers. It is guaranteed to fit the following vehicles, provided the part number or specific ID matches. Please verify your original part number before ordering.
This module replaces the following part numbers: 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, 95151084
Fitment Includes:
- AVALANCHE 1500 2010: Body Control (BCM); (under steering column), ID 25892622
- TAHOE / YUKON / SUBURBAN / ESCALADE 2010: Body Control (BCM); (under steering column), ID 25892622 or 20815898
- EXPRESS / SAVANA VANS 2008-2012: Body Control (BCM); (center dash), check specific engine/options
- ACADIA / ENCLAVE / TRAVERSE / OUTLOOK 2007-2012: Body Control (BCM); (LH dash)
- IMPALA 2006-2013: Body Control (BCM); (LH dash)
- … and many other GM models as listed in the original fitment data.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is the only way we can program the module with the correct software and vehicle-specific options for your 2010 Avalanche. This step is what makes the installation a simple plug-and-play process.
Is this a difficult part to replace myself?
For someone with basic mechanical skills and tools, it is very manageable. The main challenge is typically accessing the module under the dashboard. Our pre-programming saves you the most complex step.
What happens if my airbag light comes on after I install it?
This is a normal security procedure for some vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag’s Supplemental Deployment Module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Why is your module a better choice than one from a junkyard?
A used module from another vehicle will not work correctly. It is programmed for the original vehicle’s VIN and options. Our module is professionally tested and programmed specifically for YOUR truck, ensuring it works right out of the box.
Do I need to send my old part back?
No. We do not require the old module back. There is no core charge, which simplifies the process for you.