1997 Jimmy cranks but wont start can hear fuel pump run

Assuming the car was running fine and didn't have some catastrophic failure, I would narrow the problem down by spraying some starting fluid in through the intake (while holding the throttle open) and see if it starts that way. If it starts, then you know you have a problem with fuel, if it does not start your problem is likely due to lack of spark.
If it starts with the starting fluid you should look at replacing the fuel filter and the crank and cam sensors (assuming your fuel pump is working) in that order.
If you have a spark issue then you need to probe the wires (with a test light while attempting to start the vehicle), start right after the plug and move your way back to the distributor. If nothing out of the distributor try replacing the cap and rotor and make sure that you are getting power to the coil. Also take a look at the ignition fuse/relay.

There's 2 things that an engine needs to start. One is ...it has to have spark to the spark plugs to detonate the fuel fumes inside the cylinders. Check for spark by removing a spark plug the placing the spark plug next to a ground. Use heavy gloves or rubber gloves so you won't get a shock if it does have spark. Have somebody crank the engine. it should fire a blue spark at the spark plug tip. if it does not. Your problem is you don't have a spark. You have to look at several things that might be causing the lack of spark. It could be the coil or coils, the distributer system , or the ignition system such as your switch.

The other thing it needs is fuel. the fuel system has to be workng right to start your car. Check that the fuel pump is working and that the fuel is being distributed properly.

With the brief explanation you gave that's all I can sy for now.