The homepage of Chevrolet always offers used but certified trucks not older then a year. You could also check your local dealer. Your local newspaper should also have a used car site on their homepage or in their printed editions.
If you are looking for trucks that are for sale by owner, your best bet would be to check your local newspaper for any listings available in your area. There is usually a good selection in the classified section of your local paper.
older Chevy trucks
chevy or gmc...FOR SURE NOT ford
The big brands I have heard of are Ford and Chevy. I think Fords are the biggest and the best. They seem to have more power, and are more durable that other trucks.
Chevy trucks that's the way to go fords they suck
Chevy is currently considered to be the best manufacturer of pickup trucks
The best thing about a Chevy is well its a Chevy you can't get much better that that. Ford brake in five years and chevy last until it breaks down wich could be when you die many but any ways that is the best thing about a chevy:)
The best place to find the lowest trucks for sale is autotrader.com. They have the largest selection and you can search for very specific makes, models, and even color!
Best source is LMC trucks.
The Chevy Silverado 15 Hybrid tops the list for all trucks in a lot of mileage reviews. It gets a great 21/22 city/hwy mileage for a 2WD model.
6.2L idi (indirect injection) not the best diesel trucks..
CarsDirect.com has a fairly extensive listing of used cars and trucks around the US. Many of the models are certified pre-owned vehicles.