There are 3 relays in the glove box. All 3 are behind the plastic cover in the upper left corner of the glove box. The relay to the fuel pump is the one to the far left.
Fuse/relay center under the hood
in fuel tank
in the fuel tank
in the fuel tank
in fuel tank
what are the symptoms of a bad fuel pump on a 2002 GMC Sonoma 4.3 liters?
In the glove box behind the plastic cover on the left side when sitting in the seat
There is a fuel pump relay switch for your 1988 GMC Safari. You can find the fuel pump relay switch at most auto-parts stores.
see where the wiring loses power. trace it back, starting at the pump, and go all the way back to the relay
the fuel pump is a in tank pump, you have to drop the tank, its located inside the tank.
Mounted on top and inside the fuel tank.
Check fuel pump and fuel filter.