Are you battling persistent and frustrating electrical problems in your 2003-2006 Chevrolet Avalanche 1500? A faulty Body Control Module (BCM) is often the culprit behind issues like malfunctioning lights, unresponsive power windows, erratic HVAC behavior, and even no-start conditions. This OEM-quality BCM, part number 15137393, is the definitive solution to restore your truck’s electronic systems to perfect working order.
As the central command center for your vehicle’s body electronics, the BCM orchestrates a wide array of functions. When it fails, it can trigger a cascade of seemingly unrelated problems. Our replacement module arrives pre-programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without the need for an expensive trip to the dealership for coding.
Common Symptoms of a Failing GM BCM
If your vehicle is exhibiting any of the following issues, a failing BCM is the most likely cause. Replacing it can resolve multiple problems at once, saving you time and diagnostic headaches.
- ✔ Power windows, door locks, or mirrors not working or operating intermittently.
- ✔ Interior or exterior lights staying on, not turning on, or flickering.
- ✔ HVAC and climate control systems failing to operate correctly (e.g., blower motor not working).
- ✔ Vehicle security system acting up, causing false alarms or preventing the engine from starting.
- ✔ Airbag warning light illuminated on the dash, often with diagnostic trouble codes like B1001.
- ✔ Wipers behaving erratically or not responding to the switch.
Why Choose Our Pre-Programmed 2003-2006 Avalanche BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We handle the complex programming so you don’t have to. By programming the module with the latest GM software updates and your vehicle’s VIN, we ensure it communicates flawlessly with all other onboard systems, like the Engine Control Module (ECM) and Supplemental Inflatable Restraint (SIR) module. This direct-fit 2003-2006 Avalanche BCM is built to meet or exceed original equipment standards for reliability and longevity, backed by our one-year warranty.
Installation and Post-Install Notes
Installation is straightforward for the DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. After swapping the module, some vehicles may require additional steps:
- Airbag System Sync: If the airbag light remains on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be necessary to ensure proper brake light and traction control functionality.
This module is a direct replacement for a wide range of part numbers, including 15116066, 15136225, 10383536, 15198116, and many others, ensuring broad compatibility across GM trucks and SUVs like the Silverado, Sierra, Tahoe, Yukon, and Escalade.
Frequently Asked Questions
What does a Body Control Module (BCM) do in my Avalanche?
The BCM acts as the brain for your truck’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC blower motor.
Why is VIN programming so important for a BCM?
VIN programming loads your vehicle’s specific configuration and security information onto the module. Without it, the BCM won’t communicate correctly with other computers in your truck, leading to feature malfunctions or a no-start condition. Our pre-programming makes it a plug-and-play part.
Is this part difficult to install?
For most individuals with basic mechanical skills, the installation takes less than 30 minutes. It involves removing a few dash panels to access the module (usually under the steering column) and swapping the electrical connectors. No special tools are required for the physical replacement.
Will this fix my airbag light?
A faulty BCM can cause the airbag light to come on. While this module will fix the root cause, the system may require a ‘Setup SDM Primary Key’ procedure with a high-end scan tool to sync the new BCM and clear the light. This is a common security step in GM vehicles.
My original part has a different number. Will this still work?
Yes, this BCM is a direct replacement for many different part numbers. We list several compatible numbers in the description. As long as your vehicle model and year are listed, this module will function correctly.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle.