Should i trade in my vehicle?

I have a 2002 Dodge Ram 1500. Im upside down in my loan. I still owe $9,000 on it which orriginally leased for $16,400. I love the truck but it sucks on gas. I use my gf car everday as im driving 200 miles a day for work. Should i trade my vehicle in? Im caught up on payments but need something more fuel efficient. I have my eyes on Toyota Corollas.