Selectable ride control (manual select damping) suspension package

Years 1999–08 Models 4 Factory citations 14

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Also described as Chassis package, manual select damping

Also documented for Cadillac Chevrolet

Documented applications

Sierra — GMT800 (1999–2007)

1999–2007 Factory-verified

GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2001–2007 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2007–2008 Factory-verified

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.

Yukon — GMT800 (2000–2006)

2000–2002 Factory-verified

GM factory document — 2000 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2001 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2002 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of ZX3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.