Originally Posted by dbezzek524
I am noticing a loss in power, with a drop in mpg, with a knocking or kind of sounds like its misfiring under the truck. I can also feel the tapping in my seat and it only occurs when the truck sits in park and the trucks idle drops to 500 rpm when it is usually around 610. Also at time when I first run the truck it has problems shifting from 4th to 5th. Please help thanks.
I have a similar problem shifting to high when the transmission is cold. After mine warms up it will then go ahead and shift.