A complete driving cycle will perform diagnostics on all monitored systems and can usually be completed in less than fifteen minutes.
Performing a GM OBD-II Driving cycle:
Thank you for your reply. I have two questions.
1. Would driving 300 highway miles not reset the EVAP & Seconday AIr System monitors.
2 Which step above resets the EVAP & Seconday AIr System monitors? I did not see those listed.
Those are the only two that are not ready. All others are OK.
Thank you .