Transmission, automatic, 6 speed, Allison, LCT 1000, 3.10 first gear, 0.71 fifth gear, 0.62 sixth gear, overdrive, converter clutch

Years 2006–09, 2011–14, 2016–19 Models 4 Factory citations 11

Also described as Transmission, 6 speed automatic, Allison LCT 1000, 3.10 first gear, 0.71 fifth gear, 0.62 sixth gear, overdrive, converter clutchTransmission, Allison 1000 6 speed automatic, electronically controlled

Also documented for GMC

Documented applications

Silverado — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT800 (2001–2007)

2006, 2007 Factory-verified

GM prints the converter clutch as Conv Clutch

GM factory document — 2006 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

the 2014 guide calls it the Allison 1000 6 speed automatic; requires LML in 2014

GM factory document — 2007 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2014 chevrolet silverado 3500hd cc fleet order guide wayback, p.4.
2011–2013 Single-source

GM Authority's LML engine page pairs the 2011–2016 Silverado HD LML with the MW7 (LCT 1000); no GM list in the repository covers 2011–2013

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

with the Duramax diesel (LML in 2016, L5P from 2017); 2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.27.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.40.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.40.

This page aggregates every documented appearance of MW7 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.