When i push my clutch in my truck will not start

check for air in the clutch system , not allowing the pressure to activate the switch

of you have just replaced the clutch ,the clutch plate is in back to front and the hub is hitting on the flywheel bolts
If you haven't done that then there is air in the system and the clutch is not disengaging

Not the clutch assembly, but the start safety switch on the clutch pedal. The contacts could be corroded or just need be pushed onto the clip better to lock it on. I'd just unplug the thing from the connection and clop the two wires together to be sure that the problem is no longer a problem. Nonetheless, there is where your problem arises, from the start safety switch on the clutch pedal.

When you push in the clutch you are pushing the crank shaft forward in the main bearings but the action of the throw out bearing for the clutch pushing the fingers of the clutch pressure forward. For the engine to stall under this condition I would be checking the throw out bearing for seizure and acting as a brake on the pressure plate. Some clutch systems are part of the engine start system where you have to depress the clutch to start the engine (safety device) This may be faulty and shutting the engine down.

i had that problem with my car and all i had to do was put fluid in it and pump it up but it could be your clutch slave cylinder

Replace your main (fuel) relay. It's located under the dash behind the cruise control box.

It's called the clutch switch and it's supposed to only allow current to the starter when the clutch pedal is depressed all the way down, releasing the clutch. It's bolted in front of the clutch pedal. Yours must be bad or shifted to the left somehow. Have it checked, then repositioned or replaced.

you must be new to driving stick shifts all stick shifts u have to push the cluch in to start the car if it is strugeling to start push the gas a few times then push clutch and start vehicale

you have a hydralic clutch check for air in the clutch line and make sure there is clutch fluid level uses the same fluid as brake lines dot 3

It's probably a loose wire or adjusting nut on the clutch switch. Check and adjust it. Look under the dash on top of the clutch pedal arm there's a simple push button switch like the brake light switch. Even if you need a new switch it's only $10.