Alternator, 150 amps

Years 2004–09, 2015–16 Models 4 Factory citations 6

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Also described as Generator, 150 amp

Also documented for Cadillac Chevrolet GMC Oldsmobile Saturn

Documented applications

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2015 Factory-verified

2015: 1SV, 1SL AWD, 1SP, 1SR: S; 1SB, 1SL FWD: with LFX; with LFX

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.4.

Lucerne — G-body (2006–2011)

2006–2009 Factory-verified

GM factory document — 2006 buick lucerne rpo code list, p.1.
GM factory document — 2009 buick lucerne rpo code list, p.1.

Rainier — GMT360 (2004–2007)

2004–2007 Disputed

disputed: the 2004 lists read 150 amp and the 2005–2007 lists read 145 amp (KG3 and KG4 swap); most of GM's other lists in the repository read KG4 as 150 amp

GM factory document — 2004 buick rainier 2wd rpo code list, p.1.
GM factory document — 2007 buick rainier rpo code list, p.1.

Regal — Epsilon II, 5th gen (2011–2017)

2016 Factory-verified

2016: 1SX: S

GM factory document — 2016 buick regal order guide copy gm authority, p.5, p.23.

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