What does 3lt mean on chevy traverse?

The 3LT trim on a Chevy Traverse means that it is the third level of the LT trim and comes with leather in it. Chevrolet has different trim levels that increase with the number in front of it to let You know what level it is. For the Chevy Traverse there is the LT, 2LT, 3LT, and LTZ options. The LTZ is the top of the line flagship version and that has all of the options available on it, the 3LT is just one level below that. Many manufacturers have different lettering and number schemes to let You know what trim level the vehicle is and what options are installed on it from the factory.