Where is the fuel pump reset switch located on a 1990 Chevy Suburban?

There is no fuel pump reset switch on a 1990 Chevy Suburban (or most other vehicles for that matter). Fuel pumps are controlled by the engine computer and don't have a manual reset switch.

If you're having fuel pump issues, it's likely a more significant problem requiring professional diagnosis and repair, not a simple reset. Possible causes could include a faulty fuel pump relay, a blown fuse, a problem with the fuel pump itself, or an issue within the engine's computer system.