car was running great, i shut it off and now won't start, i have been told i have good spark and fuel that it could be my crankshaft sensor or cam sensor. the car has a 191000km on it. if anyone has any ideas it would greatly be appreciated.

Take a look at this write up. https://www.gmforum.com/trouble-shooting-test-procedures-141/engine-cranks-but-will-not-start-296982/

moved to it'* proper Mechanical Section. General Chat is for items that affect all platforms and "General Chat". It really helps the GearHeads, others with ownership of same/similar Models, the Forum regarding search bots, and our own internal search engine when we keep things in order. Thanx.