Check your pcv valve or your gas cap :P
YES
Fix the problem causing them to be on.
There is an engine misfire, probably spark plugs issue.
Check your fluid levels.
To reset the check engine light unplug the battery for 30 minutes. If the issues still persists the light will still light up when reattached.
Get the computer scanned to see what the problem is.
Disconnect the negative battery terminal for at least 30 seconds.
You can unhook the negative side of the battery for about 15 minutes and this should reset it.
you tell me how to change head light bulb on 2009 chevy malibu.
this is for safety so engine does not get ruined,check oil level!!
Any failure that can increase tailpipe emissions.
If the check engine light is illuminated, start with scanning for codes.