PTO Factory-verified

GMC · Regular Production Option

Engine control, power take off (PTO) controls

Years 1999–01, 2003–09, 2025–27 Models 6 Factory citations 22

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Also described as Engine controls for power take-off (PTO)Power take-offEngine controls for power take-off (PTO) application

Also documented for Chevrolet

Documented applications

Sierra — GMT800 (1999–2007)

1999–2001, 2003–2007 Factory-verified

2005–2007: heavy-duty models only (GM’s HD list)

GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2001 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 — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

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

Sierra HD — GMT800 (2001–2007)

2001, 2003–2007 Factory-verified

GM factory document — 2001 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)

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

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

requires the Duramax diesel and a 4WD model; includes the MGU transmission; Pro, SLE: O; SLT, AT4, AT4X, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.46.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.44.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.41.

Yukon — GMT800 (2000–2006)

2000–2001 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.

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