Engine, 6.2L V8, spark ignition direct injection, variable valve timing, Active Fuel Management, aluminum block (420 hp)

Years 2014–20 Models 3 Factory citations 13

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Also described as Engine, 6.2L EcoTec3 V8

Also documented for Cadillac Chevrolet

Documented applications

Sierra — K2XX (2014–2019)

2014, 2016–2018 Factory-verified

the guides give 420 hp; Active Fuel Management, direct injection, variable valve timing, 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.

Yukon — K2XX (2015–2020)

2015–2019 Factory-verified

2015–2018: Denali: S; SLE, SLT: not offered; 460 lb-ft; the lists add E85 max; 2019 from the guide's Graphite Performance Edition (YF0) contents, which bring it to the SLT; 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 — 2019 gmc yukon denali fleet order guide wayback, p.1.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.4.
2020 Single-source

GM Authority's 2020 Yukon page (powertrain table); no factory list or order guide read for 2020; the page does not credit GM for its codes

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

Denali: S; SLE, SLT: not available; 460 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.
2019 Single-source

GM Authority's 2019 Yukon page, which covers the Yukon and Yukon XL (its Yukon XL rows: 420 hp, 460 lb-ft); no factory list or order guide read for 2019; the page does not credit GM for its codes

This page aggregates every documented appearance of L86 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.