Is Your GM Truck Plagued by Electrical Gremlins?
If your 2002-2006 Chevrolet Avalanche 2500, Silverado, or other GM truck is experiencing bizarre electrical issues like flickering lights, malfunctioning power windows, a dead HVAC blower, or a persistent airbag light, the root cause is often a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can create a cascade of frustrating and seemingly unrelated problems. This genuine OEM-quality module, part number 10367690 (interchangeable with 15116066), is the definitive solution to restore full functionality and reliability to your vehicle.
From the Diagnostic Bay
We had a 2005 Sierra 2500 come in that the owner described as ‘haunted.’ The radio would change stations on its own, the dome light wouldn’t turn off, and the power locks worked intermittently. He’d already replaced the battery and checked fuses with no luck. After connecting our scanner, we saw multiple communication loss codes pointing to the BCM. Instead of a complex wiring nightmare, the fix was simple: installing a VIN-programmed Avalanche 2500 BCM. Within minutes of plugging it in, all the ghostly electrical issues were gone for good.
Symptoms of a Failing Body Control Module
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior or exterior lights staying on, not turning on, or flickering.
- ✔ HVAC system failure, including an inoperative blower motor or incorrect temperature control.
- ✔ Illuminated airbag warning light, often with DTCs like B1001.
- ✔ Security system malfunctions, leading to no-start conditions or false alarms.
- ✔ Intermittent or non-functional windshield wipers.
The Plug-and-Play Solution: VIN Programming Included
Don’t waste time and money at the dealership. We pre-program this module to your vehicle’s specific VIN before shipping. This critical step ensures that the BCM communicates flawlessly with your truck’s other electronic systems right out of the box. It eliminates the need for expensive dealer-only tools and programming procedures, making the installation a straightforward DIY job for any skill level. This is the most efficient way to get your truck back to 100% without hidden costs or complications.
Installation and Post-Install Considerations
Installation is simple and typically takes less than 15 minutes. The BCM is usually located under the driver’s side dashboard, near the steering column. After disconnecting the battery and swapping the module, you may need to perform a couple of simple relearn procedures depending on your specific model and symptoms:
- Airbag System Sync: If the airbag light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required using a professional scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation.
This replacement Avalanche 2500 BCM is the perfect fit for a wide range of GM vehicles, including the Chevrolet Silverado, Suburban, Tahoe, Express Van; GMC Sierra, Yukon, Savana Van; Cadillac Escalade; and Hummer H2 from 2002-2007. Verify your part number or contact us to ensure perfect fitment.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM ready to install out of the box?
Yes! We program the module to your vehicle’s VIN before it ships. This makes it a plug-and-play installation, with no additional dealership programming required.
Where is the BCM located on my 2004 Chevrolet Silverado?
On most 2002-2007 GM trucks and SUVs like the Silverado, the BCM is located under the driver-side dashboard, typically to the left of the steering column.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module without any hassle.
What if my airbag light is on after installing the new BCM?
This indicates the new BCM needs to be electronically synced with the airbag’s Sensing and Diagnostic Module (SDM). A mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.