Hey guys, I'm new here and trying this awesome site. I'd been reading and looking around for answers.

Was driving my truck normal, got to a stop and the truck staring to idle high and like stuck on third gear and also the tow light ( over drive ) started to flashing Is like the truck put it self on safe mod. Drove it back home but couldn't do more than 55 miles n hour so I didn't hurt the trans.
Any help would be greatly appreciated. Luis

 

Tow/haul light flashing means there is at least 1 code stored for the transmission. Most cost readers will not pick up transmission codes on these trucks. Hopefully, it's a solenoid or something else that is simple. Did you have any symptoms before this particular event?