98 454 vortec rough idle

on board diagnostics 2
as opposed to on board diagnostics
not sure what year they switched
who is dragging up these old threads

I think 94 or something is when they changed to the OBD 2 system....

95'sir^^^^^^^^^^^^^^^^

would this be considered constructive whoring

key words - "I think"

Does it matter he asked back in June or something.

My bad, sorry