why would the truck get stuck in 4 wheel low with all dash lights stuck on?

What is your question?

never had any problem gave my truck to a valet driver.went in hospital for 5 hour came out got in truck the control was turn to 4 wheel low engine light now on along with side airbags and traction light you cant get the truck out of 4 wheel drive no matter what you do.wont go over 40 miles an hour,took it to shop was told it just happenned out of no where could of at any time.they put it on the computer and told me they want over 2500 for air injection pump and valve assembly. i had no warning ligghht ever come on in my truck until the valet took it.my belief is that he cause the damage to my truck