Shift indicater want go past 3rd gear

What is your question?

My cadillac escalade want shift past 3rd gear.its got a new transmission bit it want go into any other gaer beside p.r.d.3.it doesnt go to 1 and 2 gear

What makes this problem better or worse?

Driving it

How long has your 2000 Cadillac Escalade had this problem?

Just got the car