2001 Pontiac sunfire service light is on dispite diagnostic testing clearance and tightened gas cap any ideas as to why the light remains on?
If you've re-set the light and it keeps coming on, it means that
the computer is still throwing codes, as they say. Take it to
AutoZone or Checker or the like, and have them read the code that's
being thrown and tell you what they mean. Evidently, something is
amiss and needs attention. FriPilot