Engine, gas, 8 cylinder, 5.3L, sequential fuel injection, iron, cylinder deactivation, GM

Years 2007–09 Models 2 Factory citations 4

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Also documented for Chevrolet

Documented applications

Sierra — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.

Yukon — GMT900 (2007–2014)

2007–2009 Factory-verified

Wikipedia names the 5.3L LY5 as a gasoline engine of the generation.

GM factory document — 2007 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2008 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of LY5 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.