rtnda

I have a 2002 Trans Am and it just died on me. It died on me last week while driving and I thought it was the fule pump as i did not hear it priming. I changed the pump checked all the fuses and relay for the pump and after doing fine for a week it ided and wont start.
I need help on this one, its driving me nuts. There are two codes which were thrown one for the Map sensor and a crank position sensor. Would either of the two sensors going bad prevent the car from starting?
Any help would be appreciated.