Fix Your Truck’s Electrical Gremlins for Good
If you’re dealing with a 2002-2006 Chevrolet Avalanche 2500 that seems to have a mind of its own—flickering lights, a dead HVAC system, or power windows that won’t budge—you’re not alone. These frustrating and seemingly random electrical issues often point to one culprit: a failing Body Control Module (BCM). As the nerve center for your truck’s body electronics, a faulty BCM can cause chaos. This replacement Body Control Module, part number 10367690, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play fix that gets you back in control without a costly trip to the dealership.
A Technician’s Notebook
I remember a customer bringing in his ’05 Avalanche 2500, completely fed up. His dash lights would randomly go out, the radio would shut off, and the power locks were intermittent. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of communication codes pointing to the BCM. These modules, especially on the GMT800 platform, are notorious for internal solder joint failures over time. We swapped in a VIN-programmed module like this one, and in less than 15 minutes, every single one of his electrical gremlins was gone. It’s a common repair in my bay, and a pre-programmed unit is the fastest way to a reliable fix.
Is Your Avalanche Showing These Symptoms?
A failing BCM can manifest in numerous ways. If your truck is experiencing any of the following, it’s a strong indicator that your module needs replacement. This is the first step in diagnosing and solving the problem with your 2002-2006 Avalanche 2500 BCM.
- ✔️ Your air conditioning or heater controls work sporadically, or the blower motor won’t turn on at all.
- ✔️ The airbag warning light is illuminated on the dash, often accompanied by Diagnostic Trouble Code (DTC) B1001 (Option Configuration Error).
- ✔️ Power windows, door locks, or interior/exterior lights fail to operate correctly or work intermittently.
- ✔️ The anti-theft or security system acts up, preventing the engine from starting (a no-crank, no-start condition).
- ✔️ You notice strange electrical behavior, like the radio turning off by itself or wipers activating randomly.
- ✔️ The instrument cluster displays erratic behavior or warning messages without a clear cause.
A Straightforward Guide to Installation
One of the best features of this module is its simple, DIY-friendly installation. You don’t need to be a master mechanic to get this done. Just follow these steps:
- Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s systems.
- Locate the BCM: On most 2002-2006 Avalanche 2500 models, the Body Control Module is located under the driver’s side of the dashboard, near the steering column.
- Unplug and Remove: Carefully disconnect the electrical harness connectors from the old BCM. They have locking tabs that need to be depressed. Once unplugged, remove the screws or clips holding the module in place and take it out.
- Install the New Module: Seat the new, VIN-programmed BCM in the mounting location and secure it. Firmly plug in all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, windows, locks, wipers, and HVAC—to confirm the repair was successful.
Verified Vehicle Compatibility
This module is a direct replacement for part number 10367690 and other interchangeable numbers. It is guaranteed to fit the following vehicles, but please verify your part number to ensure a perfect match. This unit is the correct 2002-2006 Avalanche 2500 BCM solution.
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
CHEVROLET/GMC EXPRESS/SAVANA VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
CHEVROLET/GMC SILVERADO/SIERRA 1500, 2500, 3500 PICKUPS (including Denali) 03-07 (Classic) Body Control (BCM); Crew Cab models, (under steering column)
CHEVROLET SUBURBAN/TAHOE & GMC YUKON/YUKON XL 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
This module interchanges with part numbers: 15116066, 10383536, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 15064149, 15194170.
Frequently Asked Questions
Frequently Asked Questions
Do I need to take my truck to the dealer for programming?
No. This Body Control Module comes fully pre-programmed to your vehicle’s VIN. It’s ready for installation right out of the box, saving you hundreds of dollars in dealership fees.
Is there a core charge for my old BCM?
Absolutely not. There is no core charge on this part. You can keep your old module without any hassle or need to return it.
My airbag light is on after installation. What should I do?
This is a known possibility. If the airbag light appears, the BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a technician with a professional-grade scan tool.
What tools do I need for the installation?
For most installations, you’ll only need basic hand tools, such as a socket or wrench to disconnect the battery terminal and a screwdriver or small socket set to remove the BCM mounting hardware. The entire process typically takes less than 15 minutes.
Will this fix a no-start problem?
Yes, in many cases. The BCM is a critical part of the vehicle’s anti-theft system (Passlock/Passkey). If the BCM has failed, it can prevent the vehicle from starting. Replacing it with a correctly programmed module will restore this function.