Relaced crank sensor now it has very low fuel pressure and won't start

You really need a garage to diagnose why. You may have insufficient fuel pressure, or the injectors may be blocked if you have been running the tank low.

But first, check this fuse in the Engine Bay
ECM ICiN PCM/VCM Ignition, Injectors, Crank Sensor, Coil Driver Module

https://fuse-box.info/gmc/gmc-jimmy-1995-2001-fuses-and-relays

Low fuel pressure is mentioned here

https://www.google.com/search?q=96+gmc+jimmy+won%27t+start

Good luck with the move Tammy
..

gas? diesel? if its a 6.0 gas they have problems with the crank sensor. check for fuel pressure and spark. read the computer codes. probably crank sensor or fuel pump

try fuel injecter cleaner

No such thing on your car.
The temp sensor tells the computer what the engine coolant temp is.
If it were faulty you would get a check engine light.
I would have the fuel pressure checked before and after you crank the engine. The pump relay provides power to the pump when you turn the key on to recover some of the lost fuel pressure after the car sits. The one way valve in the pump is supposed to prevent the pressure from dropping.
If the fuel pressure drops to zero it could take some time to crank the engine enough to get it back up.

You say it has fuel pressure, if it has sequential fuel injection it needs about 70psi to start the engine.
If it cranks and has spark to the plugs, the anti-theft system is not involved.
You did not mention the rotor, I assume you have spark to the plugs not just out of the coil.
If you have not yet checked cranking fuel pressure, I would start there. The pump could be weak or the filter stopped up.

Check the fuel line pressure it may be low should be 55lbs

Hi...sounds like you might need to replace your Distributor Magnetic Pickup !

Hope I helped!

It might be an issue with either the crank sensor that acts like a heat sink when hot and causes a change in internal resistance, causing it to not give proper feedback to the engine computer. Check to see if your tachometer needle is moving when cranking-if not change the crank sensor. If it sounds like it wants to start but won't, it is a fuel issue-either leaking injector O-rings or a fuel pump that has too low pressure as it heats up can be checked at the fuel rail with a pressure tester.

just a thought pull a coulpe of spark plugs see if there flooded also if you can scan the veh look at tps voltage now and look for cranking rpms should be around 240 rpms

sound like fuel pump pressure low change fuel filter.if that dont fix it . probably fuel pump. if fuel pump good . get a scanner. because a bad coolant sensor cam sensor crank sensor . coil pack module could be bad.also bad pcm.