Hi! I'm new to the forum and hoping ya'll can help me out. I'm recently having some tranny issues w/ my 05. Truck has 212000mi. I've had the truck for the last 15000mi. The truck drives great other than at full throttle. If I floor it, its like it goes into neutral. I've had other trans start to slip, but they usually will slip and still have a little pull to them untill it just wont go anymore. This is like I'm in neutral until rpm's come back down to about idle. Then truck drives great again. I pull an enclosed trailer all day every day and the truck hauls great and pulls hard under any condition except full throttle. With all the electronics on these trucks I'm wondering if maybe its a sensor issue or something. Any ideas would be greatly appreciated, Ken.

 

Hey, hey! Not to jack the thread, but my 06 does the same thing! Is the Tq Converter done for? She pulls hard till WOT, then over boost code and 'nuetral'... I use my Smarty to clear it and just pay real close attention how hard I mash the throttle. Any insight would be appreciated by two guys now!