The check engine light on my GMC Safari has come on solid and is not going
off, even after running the recommended fuel injector cleaner. It has been
suggested to me that I replace the spark plugs, spark plug wires and cap and
rotor. I didn't think that cap rotor were still being used. I tried looking,
but for the life of me I could not even locate where any of these things
are? Could somebody point me in the right direction? Thanks.