Engine, 5.3L V8, spark ignition direct injection, variable valve timing, Active Fuel Management, aluminum block (355 hp)

Years 2014–20 Models 3 Factory citations 13

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Also described as Engine, 5.3L EcoTec3 V8

Also documented for Chevrolet

Documented applications

Sierra — K2XX (2014–2019)

2014, 2016–2019 Factory-verified

the guides add Active Fuel Management, direct injection, variable valve timing and aluminum block.

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.23.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.89.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.40.

Yukon — K2XX (2015–2020)

2015–2018 Factory-verified

2015–2018: SLE, SLT: S; Denali: not offered; 383 lb-ft; the lists add E85 max; the guides name it EcoTec3; 2018 from GM's 2018 Yukon order guide

GM factory document — 2015 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2016 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.23.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.4.
2019–2020 Single-source

GM Authority's 2019 Yukon page (its Yukon rows, read for the Yukon XL doc) and 2020 Yukon page (powertrain table); no factory list or order guide read for 2019 or 2020; the pages do not credit GM for their codes

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

SLE, SLT: S; Denali: not available; 383 lb-ft; the guides name it EcoTec3; the lists add E85 max

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.4, p.5.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.4, p.5.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.10.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.23.

This page aggregates every documented appearance of L83 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.