I have a 1995 GMC Jimmy with 120,000 miles, 4.3L. The check engine light indicates trouble with the oxygen sensor. Online parts dealers show sensors in front and behind the catalytic convertor.
How many sensors are there? Should the all be replaced? Can anyone tell me how to do it? Thanks, Tom
have the same problem?
Friday, November 2nd, 2007 AT 3:16 PM