Chevrolet Silverado 1500 - 2011 Fuse Box Diagram diagramfusebox›ChevroletSilverado 1500 - 2011 Fuse Box; 9-4. Driving and Operating. Using the Engine Coolant. Heater. 1. Turn off the engine. 2. Open the hood and unwrap the. electrical cord. The cord is. secured to a wiring harness. between the engine and the. Hybrid Auxiliary Underhood. Fuse Block with a clip. Carefully. Interior Fuse Box Location: 2007-2013 Chevrolet Silverado Click to view0:17Some Chevrolets have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2008 Silverado 1500 is located. If your Silverado 1500 has many options like a sunroof, navigation, heated seats, etc, the more fuses it has.