Restore Your Avalanche’s Electrical Functions
Are you dealing with frustrating and unpredictable electrical problems in your 2007-2011 Chevrolet Avalanche? Symptoms like malfunctioning power windows, flickering lights, an erratic HVAC system, or a persistent airbag light often point to a single culprit: a failing Body Control Module (BCM). This vital component acts as the central nervous system for your truck’s body electronics. When it fails, it can cause a cascade of issues that are difficult to diagnose. This OEM-quality BCM, part number 20939137, is the definitive solution, pre-programmed to your truck’s VIN for a simple, plug-and-play installation.
Expert Pro Tip
Expert Pro Tip
Before replacing your BCM, always perform a thorough check of the main battery ground and the body ground connections under the dash. A loose or corroded ground strap is a common issue on these trucks and can mimic many BCM failure symptoms. A simple check with a multimeter can save you time and money!
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ HVAC blower motor or climate controls operating erratically or not at all.
- ✔ Security system faults, leading to no-start or random stalling conditions.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Headlights, taillights, or interior lights behaving unpredictably.
- ✔ A cluster of seemingly unrelated diagnostic trouble codes (DTCs).
Key Benefits of this 2007-2011 Avalanche Body Control Module
Choosing the right replacement part is crucial for a lasting repair. This module is engineered to restore your vehicle’s original performance and reliability.
- ✔ VIN Programmed for Your Truck: It arrives at your door ready to install with the latest GM software updates for your specific vehicle. This eliminates the need for expensive dealer programming.
- ✔ Restores Full Functionality: Get your power accessories, lighting, and security systems working like new again, solving the annoying glitches you’ve been experiencing.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications for lasting reliability and performance in all driving conditions.
- ✔ Direct-Fit Replacement: This BCM is a direct replacement for part number 20939137 and is interchangeable with other numbers like 25844480, 25835966, and 20939138, ensuring broad compatibility with GM trucks and SUVs.
- ✔ No Core Charge: Keep your old part. There’s no need to worry about returns or extra charges, making the process hassle-free.
Installation and Post-Install Notes
Installation is straightforward for those with basic mechanical skills. The BCM is located under the driver’s side dashboard near the steering column. While the module is plug-and-play, some vehicles may require post-installation procedures. If the airbag light remains on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, a Brake Pedal Position Relearn may be necessary on some models to ensure proper brake light and traction control operation.
Frequently Asked Questions
Expert Pro Tip
Before replacing your BCM, always perform a thorough check of the main battery ground and the body ground connections under the dash. A loose or corroded ground strap is a common issue on these trucks and can mimic many BCM failure symptoms. A simple check with a multimeter can save you time and money!