What is a Chevy truck LT w 1LT?

LT: The LT trim level is the mid-level trim package offered by Chevrolet on their trucks. It typically includes features such as power windows, power locks, cruise control, and a rearview camera.

1LT: The 1LT package adds additional features to the LT trim level, such as alloy wheels, a leather-wrapped steering wheel, and heated front seats. It also includes the Convenience Package, which adds features such as remote keyless entry, a tilt-and-telescoping steering column, and a cargo management system.