what caused the transmission to lock

What is your question?

when i start my truck, it makes a noise similar to power steering whining. while driving on the freeway it stop changing gears and losing power. now it will not go into drive, reverse, or neutral. the fluid level is good but smells like burnt rubber. i got an engine oil change the same day at the dealership and possible leaks of any kind was ruled out. what can be the issue??