If the car is fuel injected (not sure for 1991) then the fuel pump is in the gas tank.
My manual says it's an 18 gallon tank.
how do you remove a fuel filter from a 1990 astro van do you have to drain fuel tank
Mounted on top and inside the fuel tank.
Drain the fuel from your 1990 Chevrolet C 1500 gas tank. Remove the fuel line. Remove the fuel pump retaining plate screws. Remove the fuel pump. Reverse the process to install the new fuel pump.
necessary to remove the fuel tank. Pump is attached to fuel gauge sending unit located in tank
It is inside the fuel tank, you have to drop the tank, and remove the sending unit, from the tank to replace the fuel pump.
The noise is possibly the electric fuel pump that is located inside the fuel tank. The tank is located under the vehicle below the rear seat.
fuel pump is under the rear passenger seat . when you remove the seat there will be a panel with four screws. remove the screws than panel to acesss fuel pump.
remove glove box and remove fuse box screws
If the pump is in the tank which i believe most are you would have to drop the tank out. there would be no way around it.
Located in the fuel tank. Most likely will have to remove for access