Has 2nd and 1st gear would not shif to 3th and drive?

Answer 1

Check you Transmission Fluid (Check while engine is hot and idleing)

If this Fluid level is good then you may want to put some conditioning fluid in it or better yet if you are not comfortable with do-it-yourself then you may want to take it to a Trasmission specialty shop for an evaluation.

Some people say change the Fuid and Filter and some say don't, This is often determined by how many miles is on the vehicle. If there is not but about 60 thousand on it then you could probably change it and be fine on the other hand if it has 110 thousand on it and has never been changed then you would probably be better off just leaving it alone, it would probably do more harm than good to change it.

But like I said there are a wide rane of opinions on this subject and you gotta weigh the fact that it isn't working correctly now so you prob wouldn't harm it any worse.

Depends alot on the make and model and how many miles are on it though.

Could be several different things from very minor to very major.