Trim group, LT, all-wheel drive

Years 2008–09, 2019–20, 2022–27 Models 6 Factory citations 11

Also described as Equipment group, LT, 4WDTrim group, Colorado LT, 4WDPackage, LT option 4Equipment group 4LT, RSTrim group, LT, max range

Documented applications

Blazer EV (2024–2027)

2025–2027 Factory-verified

NICB's 2024 manual (p.161) lists this series, but no factory list before the 2025 guide shows the code, so the row starts in 2025; model 1MC26, AWD column

GM factory document — 2025 chevrolet blazer ev fleet order guide, p.1.
GM factory document — 2026 chevrolet blazer ev fleet order guide, p.1.
GM factory document — 2027 chevrolet blazer ev fleet order guide, p.1.

Colorado — Second generation (GMT31XX) (2015–2022)

2019–2020 Single-source

from GM Authority's 2019 Colorado page and GM Authority's 2020 Colorado page (trim levels); the 2015 and 2018 GM guides print the code only with a footnote digit

Colorado — Third generation (2023–2027)

2023–2024, 2026–2027 Factory-verified

GM fleet model 14C43 in the 2026 guide; the upfitter lists name it package LT option 4; the 2025 guide uses PCP for this column

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.9.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.10.
GM factory document — 2026 chevrolet colorado fleet order guide, p.1.
GM factory document — 2027 chevrolet colorado fleet order guide, p.1.

Corvette — C6 (2005–2013)

2008–2009 Factory-verified

The NICB 2012 manual prints "Custom 4LT" in its 2011 column; 2011 is not claimed because no 2011 factory list exists.

GM factory document — 2008 chevrolet corvette rpo code list, p.1.
GM factory document — 2009 chevrolet corvette rpo code list, p.1.

Equinox — Third generation (D2XX) (2018–2024)

2022 Single-source

NICB series RS (4LT) NICB 2022 p.160

Silverado EV — BT1 (2024–2027)

2026 Factory-verified

page 1 trim headings and the color and trim page show it

GM factory document — 2026 chevrolet silverado ev fleet order guide, p.1.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.63.

This page aggregates every documented appearance of 4LT in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.