Is Your GM Truck or SUV Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, a malfunctioning HVAC system, or power windows and locks that have a mind of their own, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central command center for your vehicle’s body electronics, coordinating everything from the interior lights and wipers to the security system. When it fails, it can cause a cascade of confusing and frustrating issues. This genuine quality GM Body Control Module, part number 15116066 (interchangeable with 15064149), is the definitive solution for restoring order and full functionality to your vehicle.
From the Diagnostic Bay
We had a 2005 Silverado 1500 in the shop that was driving its owner crazy. The radio would turn on and off randomly, the driver’s side power window wouldn’t work, and the security light would stay on, sometimes preventing the truck from starting. The owner had already replaced the battery and checked all the fuses. After connecting our scanner, we saw multiple communication error codes pointing to the BCM. Instead of a lengthy and expensive diagnostic process, we installed one of our VIN-programmed modules. In under 10 minutes, every single issue was resolved. It’s a common story for these vehicles, and a new BCM is almost always the fix.
Common Symptoms of a Failing BCM
- ✔ Intermittent or total loss of HVAC blower motor and climate controls.
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ Erratic interior or exterior lighting behavior.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Security system malfunctions, leading to no-start or key fob issues.
- ✔ Unpredictable warning chimes or dashboard indicator lights.
- ✔ Communication errors with other vehicle modules.
Why Choose Our Programmed GM Truck BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take an OEM-spec module and pre-program it to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates flawlessly with your truck’s existing systems right out of the box. You get to skip the expensive trip to the dealership for programming, saving you both time and money. The installation is simple, typically located under the steering column or center dash, and can be completed in minutes with basic tools.
Installation and Post-Install Notes
While installation is plug-and-play, some vehicles may require a simple relearn procedure. If your airbag light is on after installation, a scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems. In some cases, a Brake Pedal Position Relearn may also be necessary. Always disconnect the battery before swapping modules to allow the system to reset.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s specific VIN and factory settings onto the module before we ship it. This makes it a true plug-and-play part, eliminating the need for expensive dealership programming tools.
Is this part difficult to install myself?
No, for most DIYers, this is a very simple repair. The BCM is usually located under the driver’s side dashboard and held in by a few clips or bolts. The entire process often takes less than 15 minutes.
Will this BCM fit my vehicle?
This module fits a wide range of 2002-2007 GM trucks, vans, and SUVs, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Express, Savana, Escalade, and Hummer H2. Please verify the part number or use our vehicle fitment tool to ensure compatibility.
Do I need to return my old BCM?
No, there is absolutely no core charge for this part. You can keep your old module without any extra fees or hassle.
What if my airbag light comes on after I install it?
This can happen on some models. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). A professional scan tool with the ‘Setup SDM Primary Key in BCM’ function is required to perform this sync and turn off the light.