Join Date: Mar 2000
Location: Newton, IA U.S.A.
Everyone else is on the right track. It is probably a valve seal problem. But, if a sensor was bad, it would set a code which would cause your check engine light to go on. If this has happened, I would recommend either getting a scan tool and find out what code it is setting. You can normally buy a tool for less than 30 dollars, which fits into your aldl connector, which is if I'm not mistaken, right below the steering column. Different cars are located differently. Then if you don't have a service manual, I would get one. If you get a GM manual, it would give you step by step instructions on how to troubleshoot and repair. It would also probably show step by step instructions on how to change valve seals. If you don't feel comfortable doing this job, especially, computer work, a GM dealership would probably charge you less than 50 dollars to hook up to their computer. When I worked at a Chev dealership it was only about 25 to 30 dollars. I hope I have been of some help.