End the Electrical Gremlins in Your 2010 Avalanche
Are you chasing bizarre electrical issues in your truck? Flickering lights, power windows with a mind of their own, a security system that won’t cooperate, or even a no-start condition that leaves you stranded? As a technician with over 20 years of experience, I’ve seen these exact frustrations hundreds of times. The culprit is often the Body Control Module (BCM)—your vehicle’s central command center for all body-related electronics. When it fails, it can feel like your truck is haunted. This isn’t just an inconvenience; it’s a matter of reliability and safety.
This is your direct, hassle-free solution. We offer a genuine replacement 2010 Avalanche Body Control Module that arrives at your doorstep fully programmed to your vehicle’s specific VIN. We flash it with the latest GM software updates before it ships, eliminating the need for an expensive trip to the dealership for programming. You get a reliable part that’s ready to install right out of the box.
From the Diagnostic Bay: The Case of the Finicky Lights
I remember a 2010 Avalanche that came into my shop with a truly baffling issue. The owner said his headlights would randomly turn off while driving at night, and sometimes the dome light wouldn’t work. He’d already replaced the headlight switch and checked all the fuses. After connecting my scan tool, I saw no specific codes for the lighting circuits, but I did find a communication error code (U0140) pointing to the BCM. The BCM wasn’t consistently sending the ‘on’ signal to the lighting relays. After installing a new, programmed BCM, every light worked perfectly. It’s a classic example of how a failing 2010 Avalanche Body Control Module can create dangerous and confusing symptoms.
Common Signs of a Failing BCM
If your truck is experiencing any of the following, a faulty BCM is the likely cause. Don’t keep throwing parts at the problem; address the source.
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft light flashing, preventing the engine from starting.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, or various body codes (B-codes).
- ✔ A parasitic battery drain that kills your battery overnight.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. On most 2010 Avalanche models, it’s located under the driver’s side of the dashboard, near the steering column. Always verify the location for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down.
- Locate the BCM: Remove any necessary lower dash panels to gain access to the module. It’s a black box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM 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: Reinstall any dash panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, locks, windows, horn, etc.
Important Post-Installation Information
Because this 2010 Avalanche Body Control Module is the central hub for many systems, a couple of simple relearn procedures may be needed after installation to ensure everything communicates correctly.
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This is because the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be necessary. This procedure can often be performed with a capable bi-directional scan tool.
Disclaimer: Procedures can vary slightly by vehicle. We always recommend consulting a factory service manual or a qualified technician if you are unsure.
Guaranteed Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your part number or vehicle in the list below.
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 Models Including:
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the Body Control Module with the exact software and vehicle-specific options your Avalanche was built with. This ensures seamless integration and proper function of all features, saving you a programming fee at the dealership.
Do I have to send my old BCM back?
No. This purchase requires no core return. You can keep your original module, which can be helpful for comparison or as a backup.
Is this a difficult part to install myself?
For someone with basic mechanical skills and common hand tools (like a socket set and trim removal tools), this is a very manageable installation. The main challenge is accessing the module under the dash. Since it comes pre-programmed, the electronic side of the job is already done for you.
What if my part number isn’t listed but my vehicle is?
The part numbers listed are the most common interchanges for this BCM. If your vehicle is listed but your part number is different, please contact us with your VIN. We can verify compatibility to ensure you receive the correct, programmed module for your truck.