Why won't my durango start

Hello, you are saying the engine will not crank by hand, with a breaker bar and socket on the crankshaft? If that is the case, the engine may be seized for some reason. Check the engine oil to see the condition and level. Get professional assistance to corroborate your experience with not being able to turn the engine. If this is indeed the case, major internal engine damage has occurred. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops