2006 Chevrolet Impala SS Q&A

2006 Chevrolet Impala SS Question: engine light on code P442 and P140

I did replace the gas cap with a new one from auto parts store. -
Answer 1
bank 1 sensor 2 has issues with reading exh gases. after market gas cap are not always reliable. po442 could be cap issues or evap leaks in other areas. -
Comment 1
Greg is right, also the last fuel cap i got was from a GM dealer for less than aftermarket, with retainer strap! -