GMC Sierra 1500 - 2007 Fuse Box Diagram diagramfusebox›GMCGMC Sierra 1500 - 2007 Fuse Box Diagram. Home; GMC; Sierra 1500 - 2007 Fuse Box; Testing the Alarm. The alarm can be tested by following these steps: 1. From inside the vehicle, lower the driver’s. window and open the driver’s door. 2. Activate the system by locking the doors with. Interior Fuse Box Location: 1999-2007 GMC Sierra 1500 Click to view0:17Interior Fuse Box Location: 1999-2007 GMC Sierra 1500. Honda City helped make these videos. 1. Getting Started Prepare for the repair. 2. Remove Cover Locate interior fuse box and remove cover. 3. Locate Bad Fuse Find the fuse that is tied to the bad component. 4.