Not much with this economy. Loans aren't being given, especially to people with bad credit. Either look for a cheap one to buy with the $1500 or go to some place like CarHop but make sure to have it checked out.
Try an inhouse financing lot - usually it will say "Buy here, pay here' or in house financing. There are generally several in larger cities. They cater to people that don't have good credit. You might want to save another $500 or so and you may find that with $2000 down, you will have a better chance of getting a truck. $1500 only gets you into a car on my car lot, the trucks run a bit more, because they are more expensive than a car.
Try an inhouse financing lot - usually it will say "Buy here, pay here' or in house financing. There are generally several in larger cities. They cater to people that don't have good credit. You might want to save another $500 or so and you may find that with $2000 down, you will have a better chance of getting a truck. $1500 only gets you into a car on my car lot, the trucks run a bit more, because they are more expensive than a car.