You can't by just looking at it. Just replace it.
my 1997 Chevy k1500 well run fine and then it trips fuel pump relay
Press schrader valve. If no fuel is there check fuse,
Inside the fuel tank
In the fuel tank
the fuel pump is in the gas tank
How is the easiest way to change a fuel pump on my k1500 Chevy pickup
No it is throttle body fuel injection
That is called an Inertia switch and Chevy did not use them on their trucks. You need to check the fuel pump relay and fuse first. Chevy also had a problem with the wiring connector on the top of the fuel tank were it plugs into the sending unit (wire would short out and kill the fuel pump) You could also just have a bad fuel pump too.
Where is the location of fuel pump relay on 1996 Chevy Blazer?
In a 1995 Chevy K1500, the fuel pump is located inside the fuel tank. To access it, you'll typically need to remove the tank from the vehicle, which involves disconnecting the fuel lines and any associated hardware. It's advisable to work with caution due to the presence of fuel and the potential for spills.
The fuel pump relay of a 1983 Chevy Camaro can be found inside the relay fuse block. It provides power to the fuel pump.
Try the fuel pump relay.