Chevrolet has long used the designations "LT" and "LS" for identifying features in their cars and trucks. Beginning in the 1960s, they used both prefixes to identify engine models such as the LS-6 and LT-1 performance designation. In the 1970s, they began identifying trim packages in cars; for example "Type LT".
Currently, the monikers "LS" and "LT" are most commonly associated with trim levels of the Chevrolet Tahoe SUV. The following trim levels are outlined in order of ascending package features.
The base LS trim level includes all standard features such as 5.3L V8 engine and automatic transmission, FlexFuel capability, airbags, anti-lock brakes, remote keyless entry, alloy wheels with all-season tires, cruise control and power windows/locks, cloth seats, power drivers seat, CD and 9-passenger seating.
In addition to many of the standard features, the LT package upgrades with an available Z71 off-road package, locking rear differential, OnStar and Bluetooth technology, fog lamps, rear parking assist, automatic climate control, remote vehicle start, power passenger seat, leather interior, premium audio with rear audio controls, adjustable pedals and 8-passenger seating.
An even further upgraded package---the LTZ package---adds more features beyond the LT trim. Auto-ride suspension, rearview camera, satellite traffic navigation, remote boot release, heated/cooled front seats, universal home remote and a power lift gate are among other premium features standard in this package.
While many of these features are incorporated into the various trim levels, GM also offers a "build your own" program, which allows you to customise the options. Consult the online brochure for more information.