2002 Alero shutting off!! Please help!

[J.W.Alero]

I just purchased a 2002 Alero Sedan with a 3.4. Ive only owned it for 2 weeks and for some reason it has been shutting off the fuel pump. Sometime its while im driving, and sometimes it just wont start. I normally turn the key to the on position and try to hear the pump pressurize before I even attempt to crank it. If it comes on, it starts everytime, if I cant hear it, of course it wont. When it stalls while driving, it pops up a check engine light and trac off light. I had the codes pulled and theres 7 issues. C1225, C1226, C1245, C1254, C1298, P0128, and (V)1040. Yes a V. Most of them are either ABS valve coils shorting, or lamp brake light output shorts. The other 2 are EBCM not transmitting information and loss of communication. Its cut off while I was going 75 down the highway once and I really need help fixing this. I know it has nothing to do with the PassLock cause that shouldn't shut it off while driving, and it should send a Security light. Any help would be greatly appreciated! The car only has 107,000 and I really want to save it!