'05 Durango won't start

Last week, my 2005 Durango wouldn't start. Full tank of gas. It would turn over, but not engage. Swapped the fuel pump relay with the a/c relay and the Durango started. Drove it once and the next day it wouldn't start again. Dealer replaced the fuel pump yesterday. Drove it home, started it today, no problem until I went to lunch. It won't start again. Any ideas? Anyone have this happen to them?

I would check the ground for the fuel pump if it is loose tighten it. Then ask Dodge to refund your money.
Call and ask the service manager where it is. You could look under the relay base corrision happens in this area.
Buy a subscription for a year from http://www.alldata.com/ it is well worth it if you are going to repair yourself. Otherwise ask the dealer to check the ground if the pump is bad it should be under warranty. Normally you would get 90 days on repairs. They will probably charge you 1hrs shop time to tighten the ground if that is the problem.