KG4 Factory-verified

Chevrolet · Regular Production Option

Alternator, 150 amps

Years 2002–09, 2014–19, 2022–27 Models 14 Factory citations 60

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Also described as Generator, 150 amp

Also documented for Buick Cadillac GMC Oldsmobile Saturn

Documented applications

Blazer — C1XX (2019–2026)

2019 Factory-verified

the 2019 guide marks it standard on L and 1LT only

GM factory document — 2019 chevrolet all new blazer fleet order guide wayback, p.4.

Camaro — Gen 5 Zeta (2010–2015)

2014 Confirmed

GM Authority 2014 RPO list

City Express (2015–2018)

2015–2018 Factory-verified

2018 guide: 1LS, 1LT: S

GM factory document — 2015 chevrolet city express electrical body builders manual service manual 2015 en us, p.8.
GM factory document — 2017 chevrolet city express electrical body builders manual service manual 2017 en us, p.8.
GM factory document — 2018 chevrolet 18 city express bodybuilders sm 2 w cvr pg, p.10.
GM factory document — 2018 chevrolet city express order guide copy gm authority, p.12, p.21.

Corvette — C5 (1997–2004)

2004 Factory-verified

GM factory document — 2004 chevrolet corvette rpo code list, p.1.

Express — 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 — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.14.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.14.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.12.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.13.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.5.
GM factory document — 2025 chevrolet express passenger fleet order guide, p.4.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.14.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.5.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.4.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.13.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.3.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.4.

Impala — tenth generation (2014–2020)

2016 Factory-verified

all trims: S; printed as new for 2016

GM factory document — 2016 chevrolet impala fleet order guide wayback, p.4.

Impala — ninth generation (2006–2016)

2006–2009 Factory-verified

GM factory document — 2006 chevrolet impala rpo code list, p.1.
GM factory document — 2007 chevrolet impala rpo code list, p.1.
GM factory document — 2008 chevrolet impala rpo code list, p.1.
GM factory document — 2009 chevrolet impala rpo code list, p.1.

Monte Carlo — sixth generation (2000–2007)

2006–2007 Factory-verified

GM factory document — 2006 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2007 chevrolet monte carlo rpo code list, p.1.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

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.3.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.3.

Silverado — K2XX (2014–2019)

2015, 2017 Factory-verified

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.22.

Silverado Medium Duty (GM515, 2019–2026)

2025–2026 Factory-verified

GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

Suburban — K2XX (2015–2020)

2015–2019 Factory-verified

S on all trims; 2018–2019 from GM's 2018 and 2019 Suburban order guides (GM Authority copies)

GM factory document — 2015 chevrolet suburban fleet order guide wayback, p.4, p.5.
GM factory document — 2016 chevrolet suburban 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.
GM factory document — 2018 chevrolet suburban order guide copy gm authority, p.3.
GM factory document — 2019 chevrolet suburban order guide copy gm authority, p.3.

Tahoe — K2XX (2015–2020)

2015–2019 Factory-verified

S on all trims; 2018–2019 from GM's 2018 and 2019 Tahoe order guides (GM Authority copies)

GM factory document — 2015 chevrolet tahoe fleet order guide wayback, p.1, p.5.
GM factory document — 2016 chevrolet tahoe 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.
GM factory document — 2018 chevrolet tahoe order guide copy gm authority, p.3.
GM factory document — 2019 chevrolet tahoe order guide copy gm authority, p.3.

TrailBlazer — 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 2003–2004 and 2008–2009 lists and the 2006 and 2007 order guides read 150 amp

GM Heritage factory kit — 2002 Chevrolet Trailblazer, p.27.
GM Heritage factory kit — 2006 Chevrolet Trailblazer, p.157.
GM Heritage factory kit — 2007 Chevrolet Trailblazer, p.165.
GM factory document — 2002 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet trailblazer 2wd rpo code list, p.1.

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