Restore Full Control Over Your Truck’s Electronics
Are you chasing down bizarre electrical issues in your 2003-2006 Chevrolet Avalanche 1500? One minute the power windows work, the next they don’t. The radio acts possessed, and you’re getting random warning lights on the dash. As a technician with over two decades of experience, I’ve seen these exact frustrations countless times. The culprit is almost always a failing Body Control Module (BCM). This isn’t just an inconvenience; it’s a core system failure that can affect everything from your HVAC to your vehicle’s security system. This replacement BCM, part number 10383536, is the definitive, reliable solution to get your truck’s body electronics functioning correctly again.
A Technician’s Notebook: The Silverado with a Ghost
A 2005 Silverado came into my bay with a laundry list of complaints: intermittent no-start, wipers turning on by themselves, and an airbag light that wouldn’t go off (DTC B1001). The owner had already replaced the battery and checked all the fuses. After connecting my scanner, I saw multiple communication errors between modules. This pointed directly to the BCM. These modules are the central hub for body electronics, and when their internal processors or solder joints fail, they create chaotic signals. After installing a BCM with a cloning service, every single issue was resolved instantly. It’s a common failure, and this is the right fix.
Is Your Avalanche Exhibiting These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Unresponsive or erratic power windows, door locks, or interior lights.
- ✔ The security system preventing the engine from starting or engaging randomly.
- ✔ HVAC controls not working, or the blower motor operating intermittently.
- ✔ An active airbag warning light, often accompanied by diagnostic trouble code B1001.
- ✔ A cluster of seemingly unrelated electrical faults that have no other logical explanation.
- ✔ Communication loss codes (U-codes) stored in various modules.
What is Our Cloning Service?
Your vehicle’s original BCM contains specific data that is critical for its operation, including key information and option configurations. Our professional cloning service is the key to a hassle-free repair. You send us your original module, and we perform a full data transfer to this replacement unit. This means the module arrives at your door ready for immediate installation with no need for expensive dealership programming. It’s a true plug-and-play solution that preserves your vehicle’s original settings. We then securely package and return your original module with your newly programmed one.
Your 5-Minute Path to a Fully Functional Truck
- ✔ Safety First: Before you begin, disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the system.
- ✔ Locate the BCM: On most 2003-2006 Avalanche 1500 models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large electrical connectors.
- ✔ Swap the Modules: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Remove any mounting screws or clips holding the module in place and take it out. Install the new module in its place and securely reconnect all plugs.
- ✔ Reconnect and Test: Reconnect the battery terminal. Start your truck and test all the functions that were previously malfunctioning: windows, locks, lights, HVAC, etc.
- ✔ Post-Installation Checks: In some cases, an ‘Airbag’ light may remain on. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ may be needed. These are simple procedures for any qualified shop.
Verified Fitment for Your GM Truck or SUV
This BCM is a direct replacement for part number 10383536 and interchanges with 15116066, 15136225, 15198116, and others. It is guaranteed to fit the following models:
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
CHEVROLET SILVERADO 1500/2500/3500 PICKUP 03-07 (Classic) Crew Cab; (under steering column)
GMC SIERRA 1500/2500/3500 PICKUP 03-07 (Classic) Crew Cab; (under steering column)
GMC SIERRA DENALI 03-07 (Classic) Body Control (BCM); (under steering column)
CHEVROLET SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
CHEVROLET TAHOE 03-06 Body Control (BCM); (under steering column)
GMC YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
CHEVROLET EXPRESS VAN 1500/2500/3500 04-07 (center dash), w/commercial tradesman pkg (opt PRP)
GMC SAVANA VAN 1500/2500/3500 04-07 (center dash), w/commercial tradesman pkg (opt PRP)
Frequently Asked Questions
Frequently Asked Questions
Do I need to get this programmed by a dealer?
No. Our cloning service transfers all the necessary data from your original module to this replacement. It will arrive ready to install, saving you a trip to the dealership.
What does the Body Control Module (BCM) actually do?
The BCM is the central computer for your vehicle’s body electronics. It manages non-engine related functions like power windows, locks, security system, interior/exterior lights, wipers, and the climate control system.
Do you need my old part back? Is there a core charge?
We require your original module to perform the cloning service. However, there is no core charge, and your original module will always be returned to you along with your newly programmed replacement.
My airbag light is on. Will this fix it?
A faulty BCM is a very common cause for an airbag light with code B1001. Replacing it will fix the root cause, but you may need a scan tool to perform the ‘Setup SDM Primary Key’ procedure to sync the new BCM with the airbag system and clear the light.
Is this a difficult part for a DIYer to install?
Not at all. For most owners, this is a very straightforward repair. The BCM is typically easy to access under the dashboard and only requires basic hand tools to swap out. The entire process often takes less than 15 minutes.