Restore Your Truck’s Electrical Systems with a Perfectly Cloned BCM
Are you chasing down bizarre electrical problems in your Chevrolet Avalanche 2500? From flickering lights and a dead HVAC blower to a security light that prevents your truck from starting, a failing Body Control Module (BCM) can be the hidden cause of countless frustrations. As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable truck into a source of constant headaches. This isn’t just a replacement part; it’s a permanent solution. Through our expert Cloning Service, we transfer the exact data from your original BCM to this quality replacement unit. The result is a true plug-and-play module that restores full functionality without requiring a trip to the dealership for expensive programming.
A Technician’s Notebook: The Silverado with a Mind of Its Own
A customer brought in his ’05 Silverado 2500HD with a list of symptoms that sounded like a poltergeist had taken up residence in the dashboard. The radio would turn on by itself, the driver’s side power window worked only when it wanted to, and he had a persistent airbag light (DTC B1001). He’d already replaced the battery and checked all the main grounds. After hooking up the scanner, I saw a dozen intermittent communication codes. This pointed directly to the BCM, the central hub for all these components. We performed our cloning service onto a replacement module, and the customer installed it himself in the parking lot in under five minutes. Every single issue was gone. That’s the power of a proper BCM fix.
Is Your Truck Exhibiting These Electrical Gremlins?
A failing BCM doesn’t always cause a total shutdown. More often, it presents as a collection of strange, intermittent issues. If you’re experiencing any of the following, your BCM is the most likely culprit. This replacement 2002-2006 Avalanche 2500 BCM is designed to resolve these common problems.
- ✔ The security or anti-theft system light is on, causing a no-start or crank-no-start condition.
- ✔ Power windows, door locks, or interior dome lights operate erratically or not at all.
- ✔ The HVAC system is unresponsive, or the blower motor works intermittently.
- ✔ Your scan tool shows communication-related Diagnostic Trouble Codes (DTCs) like B1001, U-codes, or other body-related faults.
- ✔ The airbag (SRS) warning light stays illuminated on the dash.
- ✔ Exterior lights, such as headlights or brake lights, are malfunctioning despite good bulbs and fuses.
Your 5-Minute Path to a Fully Functional Truck
One of the best features of our Cloning Service is the simplicity of installation. You don’t need advanced mechanical skills or special tools to get your truck back in order. The entire process is designed for the DIYer or professional mechanic looking to save time.
- Safety First: Before you begin, always disconnect the negative terminal from your vehicle’s battery. This prevents any electrical shorts and helps reset the vehicle’s electronic systems.
- Locate the BCM: On most GM trucks of this era, including the Avalanche, Silverado, and Sierra, the BCM is located under the driver’s side dashboard, near the steering column. It’s a black plastic box with several large multi-pin connectors.
- Swap the Modules: Carefully unplug the electrical connectors from your old BCM. They have locking tabs that need to be depressed. Remove any mounting screws or clips holding the old module in place. Install your new, cloned BCM and securely re-attach the connectors.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all the functions that were previously malfunctioning—windows, locks, HVAC, lights, etc.
- Post-Installation Checks: In some cases, an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be needed if related warning lights appear. This requires a professional scan tool but is often not necessary. Please see our FAQ for more details.
Verified Compatibility for Your GM Truck or SUV
This module, part number 15194170, is a direct replacement for a wide range of General Motors vehicles. It interchanges with part numbers 15116066, 15136225, 15198116, and others. Please verify your part number or consult the list below to ensure a perfect match for your vehicle.
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
CHEVROLET AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
CHEVROLET EXPRESS/GMC SAVANA VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
CHEVROLET SILVERADO & GMC SIERRA 1500/2500/3500 03-07 (Classic) Body Control (BCM); (under steering column), Crew Cab models
CHEVROLET SUBURBAN & GMC YUKON/YUKON XL 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
Note: This is not an exhaustive list. Fitment can vary based on options. Always match your part number.
Frequently Asked Questions
How does the Cloning Service work?
You send us your original BCM. We use specialized equipment to read all the critical vehicle-specific data—including VIN, mileage, and key information—and flash it directly onto the replacement module. This makes the new part an identical electronic twin of your old one, ensuring seamless integration.
Do I need to get this BCM programmed by a dealer?
No. Our Cloning Service completely eliminates the need for dealership programming. The module arrives at your door ready for immediate installation and operation, saving you time and hundreds of dollars in dealer fees.
What is your core policy? Do I get my old module back?
We have no core charge! Your original module is always returned to you along with the cloned replacement unit. You are not required to send it back to us.
Why is my airbag light on after installing the new BCM?
This can happen occasionally. The BCM and the airbag’s Sensing and Diagnostic Module (SDM) need to communicate. If the light appears, a technician will need to perform a simple ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to sync the two modules and clear the light.
What does the Body Control Module actually do?
The BCM is the central computer for your vehicle’s comfort and security features. It controls power windows, locks, interior/exterior lighting, wipers, the HVAC system, and the anti-theft system. When it fails, you get the strange electrical issues this part is designed to fix.
Is this the right fix for my 2002-2006 Avalanche 2500 BCM issues?
If your vehicle is within the specified model years and exhibits the symptoms described, this cloned module is the most reliable and straightforward solution available. It directly replaces part number 15194170 and its equivalents.