service engine soon light on 2000 olds intrigue gls?

Question

replaced purge solenoid, and light comes back on. replaced oxygen sensor and light comes back on after a couple of weeks. replaced gas cap and light came back on after about a month.each time the computer code is the same. what else do i need to check and how

Answer 1

you never said what the code was i will assume its an evap leak detected as your swapping gas cap and the purge
you will need to have a smoke test done bring it into a qualified shop

Answer 2

it is pretty standard that when a car/turck reaches about 100,000 miles the light stays on when nothing is really wrong.