Restore Your Truck’s Electrical System with a Plug-and-Play Solution
Is your 2010 Chevrolet Avalanche acting possessed? Flickering lights, a security system that won’t cooperate, power windows with a mind of their own, or even a frustrating no-start condition? Before you start tracing endless wires, the problem is likely the vehicle’s electronic nerve center: the Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a failing BCM can turn a reliable truck into a source of daily frustration. This isn’t just an inconvenience; it can be a safety issue when lighting and security systems become unpredictable.
This replacement 2010 Avalanche Body Control Module is the direct, reliable fix you need. We take the guesswork and high dealership costs out of the equation. With our professional cloning service, we transfer the essential data from your original module to this replacement unit. It arrives at your door programmed with the latest GM software updates for your specific vehicle, ready for installation. Simply provide your VIN after purchase, and we handle the complex part, saving you time, money, and a trip to the dealer.
A Technician’s Notebook: The Intermittent Gremlin
A customer brought in their 2010 Avalanche complaining of the radio randomly shutting off and the driver’s side power window only working occasionally. They had already replaced the window motor and the radio itself with no luck. There were no check engine lights, but a full system scan with a professional tool revealed several communication error codes (U0140, U0155) pointing to a loss of communication with the BCM. These intermittent electrical faults are classic signs of internal BCM failure. After confirming power and ground to the module were solid, we knew the BCM was the culprit. Installing a programmed module like this one resolved all the issues instantly, restoring the truck’s functionality and the owner’s peace of mind.
Is Your Avalanche Showing These Symptoms?
- ✔️ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔️ Interior or exterior lights flickering, staying on, or not turning on.
- ✔️ The security system engaging randomly or causing a no-start condition.
- ✔️ The radio or climate controls malfunctioning.
- ✔️ Warning lights on the dash for ABS, Airbag, or Traction Control.
- ✔️ Diagnostic Trouble Codes (DTCs) such as B1001, U0140, U0151, or other communication codes.
A Straightforward Guide to Installation
- Safety First: 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 a 2010 Avalanche, the Body Control Module is typically located under the steering column, behind the lower dash panel. You may need to remove a plastic trim panel 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 module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the ignition to the ‘ON’ position (without starting the engine) and test all body functions—lights, windows, locks, radio, etc.
- Perform Relearn Procedures: As noted below, you may need to perform a Brake Pedal Position Relearn or an Airbag System Sync if specific warning lights appear. This often requires a bi-directional scan tool.
Important Post-Installation Steps
While our cloning service makes this a near plug-and-play repair, some vehicle systems may require recalibration to recognize the new module. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade diagnostic tool to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
Disclaimer: Specific requirements can vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Guaranteed Vehicle Compatibility
This BCM is a direct-fit replacement for units with part number 15819552 and is compatible with a wide range of GM vehicles. Please verify your original part number or consult the list below. This module fits the specific 2010 Avalanche Body Control Module with ID 25892622, located under the steering column. It also interchanges with the following part numbers:
Interchangeable 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
This part will fit these makes and models with these options:
(Note: Please match your specific options, ID, and location as detailed in the original fitment data).
Frequently Asked Questions
How does the cloning service work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. We use this information to program the replacement BCM with the correct software and vehicle-specific settings from GM’s database. This ensures it functions correctly with the options your truck was built with.
Do I need to send my old BCM to you?
No, this is a programming service, not a repair of your old part. We program a replacement module and ship it to you. Per our policy, your original module is always returned to you along with the programmed replacement unit. We do not keep the core.
Is this really a plug-and-play part?
For most functions, yes. Because we program it to your VIN, it will control the basic and optional features of your vehicle correctly upon installation. However, as mentioned, certain integrated safety systems like the Airbag (SRS) and Brake Pedal Position sensor may require a simple recalibration with a scan tool after install.
What tools do I need for the installation?
Basic hand tools like a socket set and a trim removal tool are usually all that’s needed to physically replace the module. For the potential post-installation relearn procedures, a professional-grade bidirectional scan tool is required.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system problems, including the ‘Service Theft System’ message and no-start issues. This programmed module is designed to restore the proper function of the Passlock/Passkey system, resolving these issues in most cases.