GMC SIERRA 2002 Manual page 445

Instrument Panel Fuse Block
You can remove fuses with a fuse extractor which is
mounted to the fuse block access door. 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.
You may have spare fuses located behind the fuse block
access door. These can be used to replace a bad fuse.
However, make sure it is of the correct amperage.
6-78
The fuse block access door
is on the driver's side edge
of the instrument panel.
Pull off the cover to access
the fuse block.
Fuse Usage
HVAC 1 Climate Control System
IGN 3 Ignition, Power Seats
-
BRAKE Anti Lock Brake System
HTR A/C Climate Control System
IGN 0 PRND321 Display,
Odometer, PCM