HI,
I had a K &N air filter on my 2007 Chev Duramax and every so often it would through a maintenance code to check the fuel cap. I put up with that for years and finally put the OEM air filter back on and it solved the problem. MY diesel guy was correct on this issue. Maybe now they do not through the code.
Festus
I had a K &N air filter on my 2007 Chev Duramax and every so often it would through a maintenance code to check the fuel cap. I put up with that for years and finally put the OEM air filter back on and it solved the problem. MY diesel guy was correct on this issue. Maybe now they do not through the code.
Festus