have issue can not get 02 monitor and evap monitor ready

What is your question?

i have a 2013 chevy impala up for inspection in ny. runs like a champ no issues no codes .i brought it in 3 weeks ago when the mechanic had it for 3 hr said the starter was bad and had to change because car would not start .thought it was strange but trusted him . i let him change and was also to do inspection. when i go back he tells me monitors were not ready and just drive to reset before inspection . i drove the drive cycle a few times put 240 miles on it and 02 sensor and evap will still not ready . brought to a different mechanic he did drive cycle 3 times and put another 160 mile on it still nothing now new mechanic is saying it may be my computer . can someone please help i have no codes an no other symptoms or lights

What makes this problem better or worse?

nothing is working

How long has your 2013 Chevrolet Impala had this problem?

a few weeks