Is Your Chevy Avalanche Plagued by Electrical Gremlins?
Are you dealing with a frustrating mix of electrical issues in your truck? One moment the power windows won’t work, the next the A/C is dead, or a random warning light appears on the dash. These aren’t separate problems—they’re often symptoms of a single failing component: the Body Control Module (BCM). This module is the central command for your truck’s body electronics, and when it fails, it can cause chaos. Restore order and full functionality with our VIN-programmed 2003-2006 Avalanche 1500 Body Control Module, the direct-fit, hassle-free solution.
Common Symptoms & Your Solution
A faulty BCM can manifest in numerous ways, often leading to confusing diagnostics and expensive repair bills. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- Intermittent or total loss of HVAC and blower motor controls.
- Power windows, door locks, or interior/exterior lights that work sporadically or not at all.
- An airbag warning light that stays on, often with Diagnostic Trouble Codes (DTCs) like B1001.
- Security system malfunctions, including no-start conditions where the engine cranks but won’t fire.
- Unpredictable behavior from your windshield wipers or radio.
This replacement BCM is engineered to be the definitive solution. We pre-program it to your vehicle’s specific VIN, ensuring it communicates perfectly with all other modules right out of the box. You get a reliable fix that restores your truck’s essential functions without a mandatory trip to the dealership.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s VIN. Simply install it, and you’re ready to go—no expensive dealer programming or calibration tools required.
- ✔ Restores Full Functionality: Get your power accessories, lighting, security, and climate control systems working like new again.
- ✔ Solves Common DTCs: Directly addresses and resolves frustrating body-related error codes, turning off persistent warning lights.
- ✔ OEM-Quality Engineering: Built to meet or exceed original equipment standards for reliable performance and long-term durability, making it the right choice for your 2003-2006 Avalanche 1500 Body Control Module needs.
- ✔ No Core Charge: We don’t require you to send your old part back. There are no hidden fees or core deposits to worry about.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
From the Mechanic’s Bench: A customer’s Silverado wouldn’t start, but the engine cranked perfectly. They had already replaced the battery and starter. The culprit? The BCM had a fault in the security circuit, preventing the fuel system from activating. A quick swap with a VIN-programmed BCM had the truck running in under 10 minutes. Don’t overlook the BCM as the source of a no-start condition—it can save you hundreds in misdiagnosis.
Whether you’re a seasoned DIYer or a professional technician, this programmed 2003-2006 Avalanche 1500 Body Control Module is the smartest way to fix complex electrical problems. It’s the same high-quality solution for a wide range of GM trucks and SUVs, including the Sierra, Tahoe, Yukon, and Escalade. Take control of your repair and get your vehicle back to being the reliable workhorse you depend on.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. This allows for a simple, plug-and-play installation without the need for expensive dealership tools or software.
Where is the BCM located on my 2004 Avalanche?
On most 2003-2006 GM trucks and SUVs like the Avalanche, Silverado, and Tahoe, the Body Control Module is located under the driver’s side dashboard, near the steering column.
Will this fix my airbag light?
This module can resolve BCM-related airbag codes like B1001. However, if the airbag light comes on *after* installation, the vehicle may require an ‘SDM Primary Key Setup’ procedure using a professional scan tool to re-sync the airbag system with the new BCM.
Is installation difficult?
Installation is straightforward for anyone with basic mechanical skills. It typically involves disconnecting the battery, removing a few trim panels, and swapping the electrical connectors from the old module to the new one. The entire process often takes less than 30 minutes.
What if I have a different part number on my old BCM?
This module is a direct replacement for a wide range of original part numbers, including 15116066, 15136225, 15198116, 15064149, and many others. As long as your vehicle’s year, make, and model are listed as compatible, this programmed unit will work correctly.