Tired of Your Truck’s Electrical Gremlins?
Is your Chevrolet Avalanche acting possessed? One day the power windows refuse to work, the next the A/C blower motor has a mind of its own, and the security light is flashing for no reason. These frustrating, seemingly random electrical issues often point to a single culprit: a failing Body Control Module (BCM). As the central command for your truck’s body electronics, a faulty BCM can wreak havoc. This VIN-programmed 15116066 BCM is the definitive, hassle-free solution to restore order and get your truck’s features working reliably again.
We take the guesswork and expensive dealership trips out of the equation. Simply provide your vehicle’s VIN during checkout, and we’ll program the module specifically for your 2002-2006 Avalanche 2500. It arrives at your door ready for a true plug-and-play installation, pre-loaded with the latest GM software updates to ensure seamless communication with your truck’s other systems.
Case Study: The Ghost in the Machine
A customer brought his ’05 Silverado 2500 into my bay last month with a laundry list of bizarre complaints: the radio would change stations on its own, the dome light flickered, and worst of all, he’d been stranded twice by a no-start condition linked to the security system. He had already replaced the battery and checked grounds. After plugging in my scanner, I saw a slew of communication codes. In my 20+ years of experience, these ghost-like symptoms almost always lead back to the BCM. We swapped in a VIN-programmed 15116066 module, and within 10 minutes, every single issue was resolved. This isn’t just a part; it’s the permanent fix for that electrical chaos.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows, door locks, or exterior lights are behaving erratically.
- ✔ The dreaded airbag warning light is on, often with a DTC like B1001 stored.
- ✔ Your truck’s security system is malfunctioning, causing a no-start or crank-no-start situation.
- ✔ The instrument cluster displays strange warnings or gauges act up.
- ✔ A professional scan tool reveals various communication or body-related DTCs.
Your Straightforward BCM Installation Guide
You don’t need to be a master mechanic to install this part. The process is quick and designed for the DIYer. Expect it to take less than 10 minutes.
- Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work. This prevents shorts and helps reset the vehicle’s systems.
- Locate the BCM: On most 2002-2006 Avalanche 2500 models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large multi-pin connectors.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Unbolt or unclip the old module and set it aside. Mount the new module in its place.
- Reconnect and Test: Firmly plug the connectors into your new, pre-programmed BCM. Reconnect the battery terminal. Start the truck and test all functions: lights, windows, locks, wipers, and HVAC to confirm the repair.
Post-Installation Note: In some cases, an airbag light may persist. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure. Additionally, a Brake Pedal Position relearn might be needed. We offer a hassle-free repair with no core charge—you can keep your old part.
Will This Fit My Truck?
This BCM is a direct-fit replacement for a wide range of General Motors vehicles and interchanges with part numbers 10383536, 15136225, 15198116, and more. While this page focuses on the 2002-2006 Avalanche 2500 BCM, it is also verified to fit the following models:
- Chevrolet Avalanche: 1500 (03-06), 2500 (02-06)
- Chevrolet Silverado/GMC Sierra: 1500, 2500, 3500 (03-07 Classic, Crew Cab)
- Chevrolet Suburban/GMC Yukon XL: 1500, 2500 (03-06)
- Chevrolet Tahoe/GMC Yukon: (03-06)
- Cadillac Escalade, ESV, EXT: (03-06)
- Hummer H2: (03-07)
- Chevrolet Express/GMC Savana Van: 1500, 2500, 3500 (04-07 w/ opt PRP)
Frequently Asked Questions
Do I need to take this BCM to the dealer for programming?
No. This is the biggest benefit we offer. We program the module to your vehicle’s VIN before shipping, so it’s ready for installation right out of the box. This saves you time and the typical dealership programming fee.
What is a core charge? Do I have to send my old part back?
A core charge is a deposit you pay until you return your old part. We have a ‘no core charge’ policy on this BCM, meaning you can keep your old module without any extra fees or hassle.
Why is my airbag light still on after installation?
This is a normal security measure in GM vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag’s Sensing and Diagnostic Module (SDM). This procedure, called “Setup SDM Primary Key in BCM,” must be done with a bi-directional scan tool and resolves the light.
What tools do I need for the installation?
For most installations, you’ll only need basic hand tools, such as a socket wrench to disconnect the battery and possibly a small screwdriver or trim tool to access the BCM. No special electronic tools are required for the physical swap.
Is this part compatible with other numbers besides 15116066?
Yes. This module is a direct replacement for many part numbers, including 15136225, 15198116, 15257043, 10367690, and others. If your original module has one of these numbers, this part will work for you.