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Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner past midnight.
This downshift feel is it when applying throttle to accelerate aggressive or when coasting or braking to a stop?
When this happens do you get a sudden jerk with speed decrease and a sudden rise in rpm?
I live in central but am on vacation now on the east coast.
If the trans oil has not been serviced then I recommend that be done, have the throttle body cleaned, and have the transmission control module updated to the most recent level to address this concern. I do not feel like this is going to result in any internal trans repairs being needed.
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I normally clean the throttle body while open using brake cleaner and a tooth brush.
The update has to be done by a dealer.
Manufacturers are constantly finding ways to make past and present cars work better through computer programming. So they release these updates for dealers to upload into cars with issues to see if those updates resolve vehicle concerns without the need for parts replaced.
If the update is not helping, then it would be time to go into the trans to make internal repairs.
Fuel pressure loss would result in the engine stalling or trying to stall, a misfire feel. I do not believe your getting any of those symptoms.
Hello again Chris here,