Weird Transmission problem with 2008 Torrent Base

Vintshave

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I'm having this seemingly random problem with my transmission (I think) on my AWD Torrent base. All of a sudden, the RPMs will jump and a couple of seconds will pass before the transmission slams into gear. The only consistent things I can say are:

1) This doesn't happen when the car is cold
2) This doesn't happen when climbing a hill
3) WHEN it happens, the car is going on a flat road or slightly downhill

There is no Check Engine light on. I did take a video of the problem occuring and I noticed something that happened too quick for my eye to see. This is the order in which it happened:

1) Suddenly, the RPM gauge jumps from 3,000 to 6,000 without the trans going into gear
2) 2 seconds later, the transmission slams into gear.
3) As the transmission engages, the Traction Control Off light BRIEFLY (.25 second) flashes on and then off

I see numerous entries on AF33 transmission issues, but I can't find this among them.

This seems to happen randomly and I cannot replicate it for my mechanic (he'd have to drive the car for an hour or so).

Anyone have an idea what's going on and how to fix it?

John
 
does you mechanic have the diagnostic tools to read transmission codes?
when is the last time you did a transmission fluid change and filter, not a flush?
 
There are 3 solenoids that get gummed up. Transgo has a kit for it. I don't know, but that would be my bet.
 
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