What have you checked so far and what were the results? Have you read the diagnostic fault codes? Do you have a scanner? If you do, look at the live data screen at the crankshaft position sensor and camshaft position sensor to see how they are listed during cranking. Look for one of their signals that is missing.
If you do not have a scanner, use a test light to see if the automatic shutdown, (ASD) relay is turning on. Look for the wire that is the same color at every injector, the ignition coil pack, or either smaller terminal on the back of the alternator. Typically that is a dark green/orange wire on cars and minivans. I think that applies to trucks too, but I am not sure. Back-probe that wire. A digital voltmeter will work too, but they do not respond as fast as a test light.
You should see the test light turn on for one second when you turn on the ignition switch, then it will turn off. What is important is whether it turns on again during cranking. If it does not, the cam and crank sensors are the best suspects.
Tuesday, April 17th, 2018 AT 6:21 PM