[yukon45427]

i haxe a 97 yukon it started cutting out on me at first when it gets warmed up then this mornin wont start at all i have drove it that way for a month or so. i have changed the coil pickup and the fuel filter and fuel pump 2 times then the computer and the fuel pump regulator. i took the truck to auto zone to have them run a code check on it and it sead a oxegen sencer was bad on the bank one so he told me to change one from the passengers side to the drivers side so i did that and had codes on both sides then. got up drove it home and parked it and now it wont start. any help with this thing would be greatly appreciated thanks in advance,if you need to call me for more info my # 937-551-3074 this is my only car and need to get it fixed fast before i loose my job