A variety of used trucks for sale by owner can be found on AutoTrader.com, Car Gurus and Craigslist, as of 2015. Buyers enter their ZIP codes into these websites and can see the used trucks for sale within close proximity to their city.
AutoTrader.com allows buyers to search for a specific make, model, year, price, specifications, fuel economy and features. To look at used trucks that are for sale specifically by owner, simply check the "private sellers only" box under the search options.
Car Gurus also has many search options, including deal ratings and accidents reported. To use Craigslist, enter the nearest city, then click on "cars+trucks" under the "for sale" tab.