Inside left (drivers side) door on dash board under an access panel...
show fuse locations
fuse box on driver side
Left Of Brake Pedal
I'm not sure if the fuse box on your 94 is in the same location as mine but on my 92 GMC Jimmy, the fuse box is under the dash to the left of the steering column. There is a plastic cover labeled "fuse" that must be removed to access fuses.
under dash on drivers side
Under the hood , in the main fuse box. It should be a relay in the main fuse box , that is located under the hood.
open drivers side door located on side of dashboard
It is in the fuse box located on the top of the drivers side fender.The location of the fuse is given on the underside of the cover.
the fuse box is located on the drivers side by the emergancy brake.... the small panle closet to it .... take the one screw out of it and pull it will pop right out
in glove box
The 2004 GMC fuse box is located in the engine compartment. The fuse box will be on the drivers side of the engine compartment.
The 1997 GMC air conditioning relay switch can be found in the fuse box. The air conditioning relay switch will be in the third column, at the top.