I have a 2004 trailblazer 6cil. It will turn over buy hesitates and doesn't start. I've replaced the alternator, battery, and crack sensor. It feels like it isn't getting gas, but it has a full tank and has "some" pressure in the fuel line. I've checked all of the fuses and cleaned the ground contacts I can find. I'm at a complete loss!! HELP!

 

Might want to head to utube and do a search on trailblazer crank no start condition .

 

You say it has some fuel pressure. That may not be enough. Spray some fuel or starter fluid into the throttle body and see if it runs for a few seconds. If it does then you don't have enough fuel pressure and may need a fuel pump.

 

Check the starter,