LTZ is identified with a number of meanings. There exists no specifically set meaning for this abbreviation. LTZ is used to describe the features on certain types of motor vehicles, most commonly features on certain types of General Motors cars and trucks in the United States.
LTZ also stands for "less than zero." The less than zero reference is commonly found in digital communications through email and texting. LTZ is also used to denote a "limited traffic zone" as well as a "local target zone." The reference to a limited traffic zone denoted by LTZ is most commonly found in Italy.