Restore Full Functionality to Your GM Truck
Are you chasing electrical gremlins in your 2002-2006 Chevrolet Avalanche 2500? A faulty Body Control Module (BCM) is often the culprit behind some of the most frustrating and difficult-to-diagnose issues. As the central command center for your truck’s body electronics, a failing BCM can cause chaos, from flickering lights and a dead HVAC system to security lockouts that leave you stranded. This replacement BCM, backed by our expert cloning service, is the definitive, hassle-free solution to get your truck back to operating as it should.
We make this repair simple. Instead of paying for expensive dealership programming and relearn procedures, you send us your original BCM. We expertly transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. The result is a true plug-and-play module. When you receive it back, you simply install it, and your truck’s systems are restored. This process for your 2002-2006 Avalanche 2500 BCM ensures seamless integration without any extra steps.
Case Study: A Tricky Diagnosis
I had a 2005 Silverado 2500HD (which uses the same BCM platform as the Avalanche) come into the shop with a bizarre complaint. The owner said his wipers would turn on randomly, the radio would shut off, and the power locks would cycle while driving. He’d already replaced the battery and checked all the main grounds. After hooking up my scan tool, I saw a dozen intermittent communication codes pointing to the BCM. These modules, especially on work trucks that see a lot of vibration and temperature swings, are prone to internal solder joint fractures. We performed our cloning service on a replacement BCM, and the truck was back to normal in an afternoon. It’s a classic failure I’ve seen hundreds of times.
Is Your Avalanche Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely cause:
- âś” Intermittent or non-functional power windows, door locks, or interior lights.
- âś” The HVAC blower motor or climate controls work sporadically or not at all.
- âś” An airbag warning light is illuminated on the dash, often with a DTC like B1001 (Option Configuration Error).
- âś” The security system acts up, causing a no-start or no-crank condition where the engine won’t turn over.
- âś” Erratic behavior from windshield wipers or exterior lighting.
- âś” A cluster of seemingly unrelated diagnostic trouble codes (DTCs) stored in the system.
A Straightforward Guide to BCM Installation
Installing your cloned BCM is a quick job that most DIYers can complete in under 15 minutes with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most GMT800 trucks like the Avalanche, 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.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the module from its mounting bracket.
- Install the New Module: Seat the newly cloned BCM into the mounting bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Post-Installation Notes
In most cases, no further action is needed. However, depending on your vehicle’s specific configuration, a couple of minor procedures may be required. If your airbag light remains on, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” function. Additionally, a “Brake Pedal Position Relearn” might be necessary. These are simple procedures for any qualified technician. Our cloning service transfers all possible data to minimize these needs.
Verified Vehicle Compatibility List
This BCM is a direct replacement for part number 15137395 and is interchangeable with 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137396, 15198116, and more. It is guaranteed to fit the following models:
- Chevrolet Avalanche 2500: 2002-2006
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (Crew Cab): 2003-2007 Classic
- Chevrolet Suburban & GMC Yukon XL 1500/2500: 2003-2006
- Chevrolet Tahoe & GMC Yukon: 2003-2006
- Cadillac Escalade, ESV, EXT: 2003-2006
- Hummer H2: 2003-2007
- Chevrolet Express & GMC Savana Van (w/ opt PRP): 2004-2007
Fix your truck’s electrical problems for good. This cloned 2002-2006 Avalanche 2500 BCM is the most reliable and cost-effective solution available.
Frequently Asked Questions
Frequently Asked Questions
How does the cloning service work?You place your order and then ship your original BCM to us. We use specialized equipment to read the unique, vehicle-specific data from your module and write it directly onto the replacement unit. We then ship both your original module and the ready-to-install replacement back to you.