GMC Envoy (2003 - 2004) - fuse box diagram - Auto Genius Dec 12, 2016GMC Envoy (2003 – 2004) – fuse box diagram Year of production: 2003, 2004 Engine Compartment Fuse Block The fuse block is located under the hood in the engine compartment on the driver’s side of the vehicle. Interior Fuse Box Location: 2002-2009 GMC Envoy - 2004 GMC Click to view0:18Some GMCs have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2004 Envoy is located. If your Envoy has many options like a sunroof, navigation, heated seats, etc, the more fuses Author: Honda City Where is the fuse box located on a 2003 GMC Envoy? The fuse box is in the engine compartment. The brake light fuse will be in the second column, third from the top. Where is the thermostat located on a 2003 gmc envoy XL?