Get a test light then check for getting voltage. Ground the engaging terminal and see if you have voltage going ot the pump.
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.
in the fuel tank.
the fuel pump relay is behind the battery there are two there the front one is the fuel relay
There is none.
On a 1988 Mazda 626, the fuel pump relay is located in the fuel tank. Always disconnect the battery before beginning work on a fuel system.
relay is giving power to other relay pump not working
In the gas Tank
where is the fuel pump cutoff relay located in a honda 88 prelude?
Starts and stops the fuel pump.
The 1988 Jeep Cherokee fuel pump relay switch is located on the firewall in the engine compartment. The switch will be on the drivers side of the firewall.
I am not sure about a 2500 but on a 1500 it is on the firewall almost directly above the distributor.
it is under the drivers seat