transmission shifting problems on 2008 Tundra 4.0 v 6 in upper grears
A little more info on what you mean would be helpful. do you have a check engine light on?
Have you had your truck scanned for transmission codes? if so post them. if not have it scanned and post them. check your local auto parts store they will usually scan your vehicle for free.
have you ever had your tranny fluid changed? if not you should have.
Scroll down to “rumble strip problem” and see if it seems familiar: All Known 2008 Toyota Tundra Problems | Tundra Headquarters Blog
When was the last time the transmission fluid/filter were serviced?
Or checked for proper fluid level?