* Underhood Fuse Block: This is located in the engine compartment, typically near the battery. It's a larger box and will contain higher amperage fuses.
* Interior Fuse Panel: This is usually found inside the vehicle, often on the driver's side, either under the dashboard or in the glove compartment. This panel contains lower amperage fuses for interior components. The exact location within the cabin will vary slightly depending on trim level. Check your owner's manual for the precise location.
To be absolutely certain, consult your 2004 Chevy Trailblazer owner's manual. It will have diagrams showing the location of both fuse boxes and a fuse box layout to identify which fuse controls what.
