I have a 1995 Vandura and power sofa fuse is under hood. There is a fuse block there too with iterior electronic gizmos on it.
under dash, far left
Left driver side, it has a access door.
there are actually 3 fuses ( that i have found) 2 are in the fuse panel below and to the left of the steering column marked ac and auxilary ac/heat. my 1993 g3500 vandura also has an inline 20 amp fuse wired in between the fuse panel and the rear blower motor switch.
My 93' vandura has a 5.7 liter 350cubic inch engine.
There is not one.
hydromatic 400
check your horn fuse not sure why but they are interconnected
You can get help with your 1983 GMC fuse block identification at most GMC dealerships. Many auto-parts stores can also help you with the fuse block identification.
The 2004 GMC fuse box is located in the engine compartment. The fuse box will be on the drivers side of the engine compartment.
5 quarts
The horn relay on the 1993 GMC Sierra is located on the fuse box. The horn relay is a rectangular shaped plug next to two larger round plugs.