Yet another problem... My 06 has a cummins and an auto. I have the smarty box is it,5" exhaust with cat removed,and a afe cold air intake. It has been fine until yesterday. It started surging,or hunting for gears in the 1-2 gears. It only does it at about 5-10 mph and only under light throttle. Doesnt do it any other time. Under heavy throttle,it is just fine. I just changed the fual filter yeterday. No change at all.

 

There is a solenoid that goes out in the transmission. It's about $80 for the dealer to replace it. Not sure how much it is if you did it yourself.

 

Your governor pressure solenoid is probably on its way out. Very common on the 05 and up trucks. You will have to pull the valvebody to replace it.

 

Thanks guys,Im gonna pick up the solenoid today and get her fixed. Ill let you know.

 

Updates??

 

Please update.

 

Replaced the governer pressure switch yesterday and everything is back to good again. Flushed trans and put in new filter and amsoil at the same time. Thanks again Guys!!!

 

Cool.

Reckon this means I can close the thread then.