Is Your Avalanche 2500 Experiencing Bizarre Electrical Problems?
If your 2002-2006 Chevrolet Avalanche 2500 is suffering from frustrating electrical issues like flickering lights, malfunctioning power windows, or a dead instrument cluster, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central computer for your truck’s body electronics, and when it fails, it can cause a wide range of confusing symptoms. This genuine quality replacement BCM, part number 15194170, is the definitive solution to restore full functionality and reliability to your vehicle.
Restoring Functionality with a Programmed 2002-2006 Avalanche 2500 BCM
Don’t let a faulty module keep your truck off the road or stuck with annoying glitches. This unit arrives pre-programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without requiring expensive programming at a dealership. It’s designed to integrate perfectly with your truck’s existing systems, resolving communication errors and restoring control over all essential body functions.
Common Symptoms of a Failing GM BCM:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ HVAC and climate control systems behaving erratically or not at all.
- ✔ Airbag warning light illuminated on the dash, often with a B1001 diagnostic trouble code.
- ✔ Malfunctioning interior dome lights or exterior lighting.
- ✔ Security system faults, leading to no-start or crank-no-start conditions.
- ✔ Unpredictable behavior from the windshield wipers.
- ✔ A host of communication-related DTCs stored in the vehicle’s memory.
This module is a direct replacement for a wide range of GM trucks and SUVs from this era, including the Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, Yukon, Cadillac Escalade, and Hummer H2. It is fully interchangeable with part numbers 15116066, 10383536, 15136225, and others, making it a versatile and reliable fix.
Installation and Post-Install Considerations
Installation is straightforward. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the vehicle’s battery, unplug the electrical connectors from the old module, remove it, and install the new one in its place. Reconnect the connectors and the battery. While this often completes the repair, be aware of a few potential post-installation 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: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
Best of all, there is no core charge. You don’t need to worry about the hassle and expense of sending your old, faulty part back. Order your 2002-2006 Avalanche 2500 BCM today and get your truck’s electronics working like new again.
Frequently Asked Questions
What does the Body Control Module do on my Avalanche?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, interior/exterior lights, the security system, wipers, and HVAC controls.
Is this BCM ready to install out of the box?
Yes! This module is sold VIN-programmed. You provide your vehicle’s VIN at checkout, and we program the module specifically for your truck, ensuring it works immediately upon installation without a trip to the dealer.
How can I be sure my BCM is the problem?
Common signs include multiple, unrelated electrical issues happening at once. For example, if your power locks, radio, and dome light all stop working, the BCM is a primary suspect. A professional scan tool can also pull codes like B1001 that point directly to a BCM failure.
Do I need special tools for installation?
Basic hand tools are all that’s needed to physically swap the module. However, in some cases, a professional-grade scan tool may be required for post-installation procedures like syncing the airbag system if the warning light stays on.
What is the ‘Setup SDM Primary Key in BCM’ procedure?
This is a specific relearn procedure that may be required if your airbag light is on after installing the new BCM. It uses a diagnostic tool to create a secure handshake between the new BCM and the existing Sensing and Diagnostic Module (SDM), ensuring the safety system is fully operational.
Do I have to return my old part?
No, there is no core charge for this part. You can keep your original module without any additional fees or hassle.