KG4 Factory-verified

GMC · Regular Production Option

Alternator, 150 amps

Years 2002–09, 2014–19, 2022–27 Models 7 Factory citations 37

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Also described as Generator, 150 amp

Also documented for Buick Cadillac Chevrolet Oldsmobile Saturn

Documented applications

Acadia — Second generation (C1XX) (2017–2023)

2017–2019 Factory-verified

2019 guide: SL, SLE-1, SLE-2, SLT-1: S; SLT-1 standard on FWD only

GM factory document — 2017 gmc acadia order guide copy gm authority, p.6, p.24.
GM factory document — 2018 gmc acadia order guide copy gm authority, p.8, p.32.
GM factory document — 2019 gmc acadia order guide copy gm authority, p.8, p.34.

Envoy — GMT360 (2002–2009)

2002–2009 Factory-verified

the 2005–2007 lists swap the KG3 and KG4 wordings (this code reads 145 amp there), a misprint: the 2002–2004 and 2008–2009 lists read 150 amp; the gmtnation RPO compendium reads 150 amp

GM factory document — 2002 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2005 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2008 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

Savana — GMT610 (2003–2027)

2017–2018, 2022–2027 Factory-verified

the 2025–2027 guides read Alternator, 150 amps; S: Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT; O: Cargo 1WT

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 — 2025 chevrolet my25 express savana electrical bbm, p.12.
GM factory document — 2025 gmc savana cargo fleet order guide, p.30.
GM factory document — 2025 gmc savana cutaway fleet order guide, p.37.
GM factory document — 2025 gmc savana passenger fleet order guide, p.22.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.
GM factory document — 2026 gmc savana cargo fleet order guide, p.32.
GM factory document — 2026 gmc savana cutaway fleet order guide, p.40.
GM factory document — 2026 gmc savana passenger fleet order guide, p.24.
GM factory document — 2027 gmc savana cargo fleet order guide, p.29.
GM factory document — 2027 gmc savana cutaway fleet order guide, p.20.
GM factory document — 2027 gmc savana passenger fleet order guide, p.22.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified

2015 marks: Sierra, SLE, SLT: S; 2018: GM's 2018 Sierra 2500HD order guide; 2019: GM's 2019 Sierra 3500HD order guide

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.4.
GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.2.
GM factory document — 2019 gmc sierra 3500hd order guide copy gm authority, p.7.

Sierra — K2XX (2014–2019)

2014, 2016–2019 Factory-verified

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.22.
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; 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.22.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.4.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

SLE, SLT: S; Denali: not available

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.22.

This page aggregates every documented appearance of KG4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.