1996 Pontiac Sunfire Q&A
1996 Pontiac Sunfire Question: Engine light on cause gas cap, it continues appearing, what to do?
The EVAP system needs to be tested, The information the computer is receiving from the test is not holding a preset tolerance for a properly sealed system. It is recognizing there must be a gas cap issue because of the information it has received is a very large leak. Obviously it's not the gas cap. - ProfessorG