Pull the bed off then disconnect fuel lines and then take off fuel pump locking ring and it shud come rite out,
where i the fuse for a fuel pump on 1991 gmc truck
in fuel tank
In the gas tank.
You must drop the fuel tank.
It is inside the fuel tank .
Mounted on top and inside the fuel tank.
That truck has a fuel pump inside of each tank.
in the gas tank.
Mounted on top and inside the fuel tank.
No.
inside of the fuel tank Inside the fuel tank, mounted on top.
GMC vehicles do not use inertia/reset switches.