westernbob
Expert Expediter
i was wondering if anyone else has had this problem.i have a 2004 gmc 2500 van with the 6.0 engine.sometimes it stays in high idle (measured at the dealer at 3000 rpm)it will go 60 mph on the freeway with my foot off of the pedal.the dealer swore it was the throttle body,i had them replace it and the next day same problem.it does come and go,but i can't make it happen,it does it when it wants to.the only other clue is that the am radio stations have seriously abnormal static when this is happening.so far dealer can't figure it out.i was wondering if any drivers out there had a similar problem. thanks