 My 4.6 litr. transmission acts like no other vehicle I have driven, it constantly is hunting for a gear and the gas pedal is not responsive to requests for a small amount of power to maintain a constant speed. When doing this, I apply pressure to the pedal and after an inch or more of down pressure with nothing happening, it down shifts. I tow a 5700 lb trailer and the poor response of the engine and lack of power on hills makes driving this vehicle ULTRA annoying.  Toyota said the truck is normal, baloney!!!! If it responded like every other vehicle I have driven, I would not be writing this review. I've been driving Toyotas for 30 years.      