Transmission, 8-speed paddle-shift automatic

Years 2015–19, 2022–23 Models 3 Factory citations 10

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Also described as Transmission, automatic, 8 speed, 8L90Transmission, 8 speed automatic

Also documented for Cadillac GMC

Documented applications

Corvette — C7 (2014–2019)

2015–2019 Factory-verified

all models: O; 2019: from GM order-guide copies (Corvette Action Center, GM Authority)

GM factory document — 2015 chevrolet corvette fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet corvette fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2018 chevrolet corvette fleet order guide wayback, p.5.

Express — GMT610 (2003–2027)

2017–2018, 2022–2023 Factory-verified

printed only in the Upfitter lists shared with the Savana

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 — K2XX (2014–2019)

2015, 2017 Factory-verified

the 2017 manual names it 8L90.

GM factory document — 2015 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.23.

This page aggregates every documented appearance of M5U in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.