Restore Full Function to Your Truck’s Electronics
If you’re dealing with bizarre electrical problems in your 2010 Chevy Avalanche—like flickering interior lights, power windows with a mind of their own, or a security light that won’t turn off—you’re likely facing a failing Body Control Module (BCM). As the central nervous system for your truck’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating issues. This isn’t just an annoyance; it can impact vehicle security and safety systems. This replacement Body Control Module is the definitive solution, arriving at your door pre-programmed with the latest GM software specifically for your truck’s Vehicle Identification Number (VIN).
From the Diagnostic Bay
A customer brought in a 2010 Avalanche last month with a classic case of BCM failure. The dash lights would randomly dim and brighten, the radio would cut out, and the remote keyless entry worked only intermittently. He had already replaced the battery and checked the main grounds, but the gremlins persisted. After hooking up my scan tool, I saw multiple communication loss codes with various modules. This pointed directly to the BCM. The root cause? A common issue on these platforms where a small leak from the windshield cowl allowed water to drip onto the module over time, causing internal corrosion. Swapping in a VIN-programmed BCM like this one resolved all issues in a single visit, saving him a costly trip to the dealership.
Is Your Avalanche Showing These BCM Failure Signs?
A failing BCM can manifest in numerous ways. Over my 20+ years as a technician, these are the most common symptoms I’ve diagnosed that point directly to a needed replacement:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from dashboard gauges or warning lights (including the security light).
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ Problems with the HVAC (heating and air conditioning) controls.
- ✔ Remote keyless entry or factory alarm system malfunctions.
- ✔ Communication errors with other vehicle modules, leading to a variety of diagnostic trouble codes (DTCs).
- ✔ In severe cases, a no-start condition where the BCM fails to recognize the key’s security chip.
Your Straightforward BCM Installation Guide
Installing your new 2010 Avalanche BCM is a manageable job for a confident DIYer. The key is taking your time and following the proper post-installation procedures. The module is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- Access the Module: Remove any lower dash panels or trim necessary to gain clear access to the old BCM. It’s often secured with a few small bolts or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. These connectors have locking tabs that must be depressed to be released. Do not force them. Once disconnected, remove the old module.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Power Up: Reinstall any trim panels you removed. Reconnect the negative battery terminal.
- Post-Installation Relearn: This is a critical step. You will need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to ensure the airbag system communicates correctly and extinguish the airbag warning light. Some vehicles may also require a Brake Pedal Position Sensor recalibration. If you are not equipped to perform these steps, a professional technician must complete the installation.
Will This Fit My Vehicle? Cross-Reference and Compatibility
This Body Control Module is a direct replacement for a wide range of GM vehicles and part numbers. We program it specifically for your vehicle, ensuring seamless integration. Please verify your part number against the list below or confirm your vehicle is listed in the compatibility chart.
Replaces 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
Fits Select Models Including:
ACADIA (2007-2012)
CAPRICE (2011-2013)
CAPTIVA SPORT (2012)
CTS (2008-2013)
DTS (2006-2011)
ENCLAVE (2008-2012)
EQUINOX (2007-2009)
ESCALADE / ESV / EXT (2010)
EXPRESS VANS (2008-2012)
G8 (2008-2009)
HUMMER H2 (2008-2009)
IMPALA (2006-2013)
LUCERNE (2006-2011)
MONTE CARLO (2006-2007)
OUTLOOK (2007-2010)
SAVANA VANS (2008-2012)
SRX (2007-2009)
STS (2010)
SUBURBAN 1500 (2010)
TAHOE (2010)
TORRENT (2007-2009)
TRAVERSE (2009-2012)
VUE (2008-2010)
YUKON / YUKON XL 1500 (2010)
(Note: Please check specific options and IDs in the original fitment data if applicable.)
Frequently Asked Questions About the 2010 Avalanche BCM
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options that your Avalanche came with from the factory. This ensures all features work correctly and eliminates the need for expensive dealership programming.
Is this a simple plug-and-play part?
It’s very close. The module is a direct physical replacement and is electronically programmed for your vehicle. However, after installation, critical safety procedures like the airbag system (SDM) key setup and potentially a brake pedal sensor relearn must be performed with a professional-grade scan tool. This is not optional and is required for proper vehicle function and safety.
Can I install this myself without any special tools?
You can perform the physical installation with basic hand tools (socket set, trim removal tools). However, you will need access to a bi-directional diagnostic scan tool to complete the mandatory post-installation relearn procedures. If you don’t have one, we strongly recommend having a qualified mechanic complete the final steps.
Will this fix my ‘Service Airbag’ light?
If the airbag light is on due to a communication fault with a bad BCM, this new module will restore communication. However, you must perform the ‘Setup SDM Primary Key in BCM’ procedure after installation to properly sync the modules and turn off the light.
What happens if I don’t do the relearn procedures?
Skipping the post-installation steps can leave you with an active airbag warning light (meaning the system is disabled), incorrect brake light operation, and other potential communication issues between modules. It is a critical part of the repair.