If your 2010 Chevrolet Avalanche is acting possessed with a mind of its own—power windows failing, interior lights flickering, or the security system preventing it from starting—you’re likely dealing with a faulty Body Control Module (BCM). As the central command center for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated issues. Stop chasing electrical gremlins and get a definitive, reliable solution.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN at checkout, and our team of technicians will program this module with the latest GM software specific to your 2010 Avalanche. This ensures perfect communication between all your vehicle’s systems right out of the box, restoring the functionality you depend on every day.
A Technician’s Notebook
I remember a 2010 Tahoe (which uses a nearly identical BCM system to the Avalanche) that came into the shop with a classic complaint: ‘The radio turns on by itself, and my battery is dead every morning.’ The customer had already replaced the battery and the radio, with no luck. After a quick scan, we saw a handful of U-codes, specifically U0140 (Lost Communication with BCM). This pointed directly to an internal BCM failure causing a parasitic draw. Instead of a multi-day diagnostic nightmare, we installed a VIN-programmed module. The parasitic draw vanished, and all electronics functioned perfectly. This is a textbook example of how a failing 2010 Avalanche Body Control Module can create phantom problems that are impossible to solve without addressing the root cause.
Is Your Avalanche Showing These BCM Failure Signs?
- ✔️ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔️ Erratic interior or exterior lighting (dome lights, headlights, dash lights).
- ✔️ The security or anti-theft light stays on, often causing a no-start condition.
- ✔️ Horn honking unexpectedly or not working at all.
- ✔️ False warnings on the driver information center (DIC).
- ✔️ Communication error codes with other modules, such as U0140, U0155, or U0100.
- ✔️ Wipers activating on their own or not turning off.
Your Straightforward BCM Installation Guide
Installing your new 2010 Avalanche Body Control Module is a manageable job for a confident DIYer. While the exact location can vary slightly, it’s typically found under the driver’s side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to discharge.
- Locate the BCM: On the 2010 Avalanche, the BCM is located under the steering column, usually attached to a metal bracket. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or lifted. 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 reconnect all the electrical harnesses, ensuring each one clicks firmly into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: windows, locks, lights, wipers, etc.
- Post-Install Procedures: In some cases, you may need to perform a simple relearn procedure. If your airbag light is on, a scan tool is required to perform the ‘Setup SDM Primary Key’ function. A ‘Brake Pedal Position Relearn’ may also be needed for proper traction control operation.
Disclaimer: This is a general guide. Always consult your vehicle’s specific factory service manual for detailed instructions and torque specs.
Verified Fitment For Your Vehicle
This module is a direct replacement for a wide range of GM vehicles and is compatible with numerous part numbers, including 15837419, 25892622, and 20815898. We guarantee compatibility when you provide your VIN. This part fits:
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
YUKON / YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
ESCALADE / ESV / EXT 10 Body Control (BCM); (under steering column), ID 25892622 or 20815898
ACADIA 07-12 Body Control (BCM); (LH dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
EXPRESS & SAVANA VANS 08-12 Body Control (BCM); (center dash)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
DTS 06-11 Body Control (BCM); (RH center dash)
CTS 08-13 Body Control (BCM); LH dash
…and many more models listed in the original fitment data. Please verify your part number or contact us with your VIN.
Frequently Asked Questions about the 2010 Avalanche Body Control Module
Frequently Asked Questions about the 2010 Avalanche Body Control Module
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential. It allows our technicians to program the BCM with the exact software and vehicle-specific options that your Avalanche came with from the factory. This ensures a seamless installation without needing a trip to the dealership.