Steering, power, non-variable ratio

Years 1998, 2004–07, 2012 Models 3 Factory citations 3

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Also described as Steering, powerSteering system, non-variable

Also documented for Chevrolet GMC Oldsmobile Pontiac Saturn

Documented applications

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

2012 Single-source

deleted for 2013, NJ2 in its place (GM Authority 2013 changes)

Rainier — GMT360 (2004–2007)

2004–2007 Factory-verified

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

Skylark — N-body (1992–1998)

1998 Factory-verified

GM factory document — 1998 buick skylark rpo code list, p.1.

This page aggregates every documented appearance of N40 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.