Restore Full Functionality to Your GM Truck or SUV
Are strange electrical problems plaguing your Chevrolet Avalanche? From flickering lights and a non-responsive HVAC system to malfunctioning power windows and door locks, a failing Body Control Module (BCM) can turn your reliable truck into a source of daily frustration. This OEM-quality Body Control Module is the direct-fit, plug-and-play solution to restore full functionality and get your truck back to dependable working order. Pre-programmed to your vehicle’s specific VIN, it eliminates the need for costly dealership visits and complex setup procedures.
Common Failure Symptoms & Your Solution
A faulty BCM is the central point of failure for many of your vehicle’s comfort and security features. If you’re experiencing any of the following issues, this module is the definitive solution:
- Intermittent or complete loss of HVAC blower motor and climate controls.
- Power windows, door locks, or mirrors that work sporadically or not at all.
- Interior or exterior lights (headlights, taillights, dome lights) behaving erratically.
- The security system acting up, causing no-start conditions or false alarms.
- An airbag warning light on the dash, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- A range of other electrical gremlins that seem to have no logical source.
Replacing your old, failing unit with this pre-programmed Chevy Avalanche 1500 Body Control Module will resolve these issues and restore the precise, reliable operation you expect from your vehicle.
Features & Tangible Benefits
- ✔ Plug & Play Installation: This module arrives pre-programmed to your vehicle’s VIN. Simply install it, and you’re ready to go—no additional programming or dealer trips required.
- ✔ Restores Vehicle Functions: Regain complete control over your lights, windows, locks, wipers, and HVAC system for a safer and more comfortable driving experience.
- ✔ Solves Common DTCs: Specifically addresses and clears persistent trouble codes related to body electronics, including the notorious B1001 airbag code (post-install sync may be needed).
- ✔ OEM-Quality Engineering: Built to meet or exceed original equipment standards, ensuring long-lasting durability and reliable performance under all conditions.
- ✔ Broad Compatibility: A direct replacement for a wide range of part numbers, including 15943678, 25835966, 20939137, and 22860591, ensuring a perfect fit for your truck or SUV.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
From the Technician’s Bench: After 20 years of diagnostics, I can tell you the BCM is the ‘central nervous system’ for a vehicle’s body electronics. When it fails on these GM trucks, the symptoms can be maddeningly inconsistent. Owners often chase wiring issues for weeks. The real fix is a reliable replacement. Getting a pre-programmed Chevy Avalanche 1500 Body Control Module like this one is a game-changer. It takes a potentially complex, multi-hour dealership job and turns it into a simple 15-minute swap you can do in your own driveway. It’s the smartest way to solve the problem for good.
Installation & Post-Install Notes
Installation is straightforward for most DIYers. The BCM is typically located under the driver’s side dashboard, near the steering column. While the module is plug-and-play for most functions, please be aware of these potential post-installation procedures:
- Airbag System Sync: If the airbag warning light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control operation.
Frequently Asked Questions
What does a Body Control Module do on a Chevy Avalanche?
The BCM acts as the central computer for your truck’s body electronics. It manages non-engine related functions like the power windows, door locks, interior and exterior lighting, security system, wipers, and the HVAC climate control system.
Is this BCM difficult to install?
No, the physical installation is typically very simple and takes less than 15 minutes. It’s located under the steering column and just requires unplugging the old module and plugging in the new one. No special tools are needed for the swap itself.
Will this module require programming at the dealership?
Absolutely not. We pre-program the module to your vehicle’s specific VIN before shipping it. This ensures it works seamlessly with your truck’s existing systems right out of the box, saving you time and money.
How do I know if my BCM is the problem?
Common signs of a failing BCM include multiple, unrelated electrical issues happening at once. For example, if your power locks, dome light, and radio all stop working intermittently, the BCM is a primary suspect. A proper diagnosis with a scan tool can confirm the failure, but these symptoms are a strong indicator that you need a new Chevy Avalanche 1500 Body Control Module.
What happens if the airbag light stays on after installation?
This is a normal security feature. The new BCM needs to be electronically ‘introduced’ to the vehicle’s airbag system (SDM). A repair shop or a technician with an advanced diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ function in a few minutes to complete the sync and turn off the light.
Does this part come with a warranty?
Yes, this unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your purchase.