Wanted Screen Used Fall Guy Truck

Here's some information I found on Wiki which might be of help to you. Seem like one of the truck ended up on Ebay in 2003.

Colt's truck was an early 1980s GMC 4x4 pickup. It had a 6-inch lift and 35-inch Dick Cepek off-road tires mounted on a 16-inch chrome wagon style wheel. The truck also had a custom-made chrome roll bar mounted with 4 off-road lights, and a custom chrome grille guard mounted with 2 off-road lights and a Warn winch. One unusual characteristic was a secret compartment in the truck's bed, which was used to stash away villains or to hide weapons.

The vehicle was painted brown and tan two-tone; it had an eagle painted on the hood with the phrase "Fall Guy Stuntman Association" underneath. The truck was very often involved in high-speed chases and huge jumps. As a result, it became very popular, especially with children, and numerous toy and model versions were produced.

During the show's run, the stunts took their toll on the trucks, so several different year model trucks are used during the show's initial run. As a result, there are some inconsistencies in the episodes. For instance, in the pilot episode the truck (a 1980 model) has two square headlights and a light tan interior. For the remainder of the series, it almost always had the quad headlight configuration of the 1981 and newer models, with a dark brown interior. The truck always appeared to be a long bed model, but in a couple of episodes a short bed model was used. After destroying several trucks due to the huge jumps, a custom built jump truck was built as a solution. It had a reinforced frame and axles, and a mid-mounted engine. This greatly reduced the number of trucks scrapped during the show's production.

At the end of the series, the remaining trucks were either auctioned or given away in a contest. It is unknown how many still exist or their whereabouts, but one of them was sold on eBay in 2003.