Automatic Transmission Torque Converter problems of the 2019 Toyota Tacoma

Purchased my vehicle on 10/19/19. Shortly thereafter, I began experiencing the following: in the drive mode, the vehicle does not down-shift properly (a lag) to lower gears when slowing down from higher speeds(50-60 mph) to lower speeds (30-40 mph). It stays in 5th or 6th gear too long, causing the truck/transmission to "lug" down with some engine "missing" before it finally downshifts automatically. I have to drive in the sport mode and manually shift gears regularly to circumvent this problem. The transmission shift points are not set correctly, and/or the transmission torque converter stays engaged/locked in too long at higher gears when slowing down to lower speeds. This will eventually lead to transmission bearing failures and safety problems if the transmission-engine starts to stall/cut out. Toyota corporate has been non-responsive to my complaint submitted.

This Tacoma sr5 is brand new, about 400 miles on it so far. Noticing a lot of hunting by the transmission to find a gear it is happy with for a given speed and terrain. But the most concerning issue is that it pulses hard when slowing to a stop. Thought it was the brake rotors at first, but I put the transmission in neutral while braking, and braking in neutral works very smoothly. Seems more like the torque converter doesn't want to disengage. Also notice a whistling sound from the rear when accelerating thru approx 40mph. Will be taking it in to the dealer soon to have these things checked. I love the truck otherwise, and was planning to own this vehicle for 10+ yrs, but this is not a good start.

This Tacoma sr5 is brand new, about 4700 miles on it so far. Noticing a lot of hesitation between the 35-60 mph. After weeks of taking the vehicle back to savannah Toyota, its the torque converter. The vehicle has slow pick up and hard acceleration from a stop to position. Toyota says it's normal, but several other owners are having the same problem. I have attached the service order to the complaint.