MYD Factory-verified

Chevrolet · Regular Production Option

Transmission, automatic, 6 speed, HMD, 6L90

Years 2009, 2012–19, 2022–23 Models 7 Factory citations 16

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Also described as Transmission, 6 speed automatic, 6L90Transmission, 6 speed automatic, heavy-duty, electronically controlled

Also documented for Cadillac GMC

Documented applications

Camaro — Gen 5 Zeta (2010–2015)

2012–2015 Single-source

only in: ZL1; GM Authority LSA engine page only

Express — GMT610 (2003–2027)

2014–2018, 2022–2023 Factory-verified

printed only in the Upfitter lists shared with the Savana

GM factory document — 2014 chevrolet gh van elec bbm si brief, p.7.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.14.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.8.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.8.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.16.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.13.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.14.

Silverado — GMT900 (2007–2013)

2009 Factory-verified

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

Silverado HD — GMT900 (2007–2014)

2009, 2014 Factory-verified

the 2014 guide calls it a heavy-duty 6 speed automatic with tow/haul mode; requires L96 in 2014

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.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

with the 6.0L V8 (L96 or LC8); 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.3.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.4.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.4.

Silverado HD (T1XX, 2020–2027)

2023 Factory-verified

GM factory document — 2023 chevrolet 23silverado 2500 3500hd electrical body builder sm en us 2022oct12, p.12.

Suburban — GMT900 (2007–2014)

2009 Factory-verified

Wikipedia's Suburban page names the 6 speed 6L90 automatic for the 2500 (standard 2008 to 2013); the list shows it for 2009.

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

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