1992 GMC Sierra Electrical Gremlin Mystery Finally Solved Click to view on Bing12:51Yep.r weeks of thinking about my plan of attack, yesterday I was hell bent on finally finding the voltage issue. Here's what I found!Author: ZippoVargaViews: 59K GMC Fuse Box Diagram All GMC Fuse Box Diagram Models Fuse Box Diagram and detailed description of fuse locations. Fuse panel diagram 1992 gmc sierra slc - Fixya SOURCE: fuel pump fuse located on 1997 gmc sierra The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay. Relay switch is usually $8-$15 depending on where you shop Anyone have a fuse panel diagram for a 1992 gmc 1500 - Fixya Need to see fan belt diagram for 1992 gmc sierra 1500 please go to the link below, it is belt routing catalog, just look up your model and engine and go to the diagram number stated. It is a large PDF file allow time for it to load. Fuse box Chevrolet Suburban 1992-1999 Locate fuse and relay. Fuse box diagram. Identifying and legend fuse box Chevrolet Suburban, Chevrolet Tahoe, GMC Suburban, GMS Yukon 1992-1999.