overdrive not kicking in

[jgrish]

They figured out it was the transfer case lock-up valve. And its only $45 to get a new one. Thats a lot better than i had expected!!

Thanks for all the help!!

[Tone]

Transfer case lockup valve sounds a little suspicious as I don't believe it has anything to do with tranny and overdrive. Keep us posted. I think your fluid flushed and the filter replaced since it just happened after a refill. And add an external tranny filter to keep the new fluid free of big particles.

[VehiGAZ]

Tone, he's talking about the torque convertor lock-up mechanism, not the transfer case lock-up.

My first post suggested that the problem a failure of the torque convertor lock-up to engage, not a failure of 4th gear to engage. Sounds like that was indeed the problem, in which case the diagnosis is not suspicious at all - it's right on the money.

Good luck jgrish! Let us know what happens...

[Tone]

Thanks - he posted transfer case lockup valve....

[VehiGAZ]

Oh, I didn't notice that before. Hmm...

jgrish, now you're DEFINITELY going to have to tell us what they did and how it worked out!