GMC 2002 Sierra - Manual (Page 448)

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Underhood Fuse Block The underhood fuse block in the engine compartment on
the driver’s side of the vehicle near the battery. Lift the
cover for access to the fuse/relay block.
Once you remove the cover, you will see some fuses to
the top right of the fuse/relay block. These are spare
fuses and can be used accordingly.
You can remove fuses with a fuse extractor. The fuse
extractor is located in the underhood electrical center. To
remove fuses if you don’t have a fuse extractor, hold the
end of the fuse between your thumb and index finger
and pull straight out.
See “Engine Compartment Overview” in the Index for
more information on its location.