2001-2008 Duramax 175 AMP Glow Plug / Intake Air Heater FusePrice:$9.95
If your glow plugs or intake air heater is not working on your Duramax engine, one of the problems could be a blown fuse. This fuse protects the main power circuit to the glow plugs/IAH. Fuse is mounted under the plastic fuse panel cover in the underhood fuse block mounted on the drivers side fender.