Plant code: Oshawa, Ontario (truck)

Years 1998–00, 2002–04 Models 4 Factory citations 11

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Also described as Plant, Oshawa, Ontario, GM of CanadaPlant code, Oshawa, Ontario, Canada (TRK)

Also documented for Cadillac Chevrolet

Documented applications

Sierra — GMT400 (1988–2000)

1998–1999 Factory-verified internal

GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd rpo code list, p.1.

Sierra — GMT800 (1999–2007)

1999–2000, 2002–2004 Factory-verified internal

GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2000 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 — 2004 gmc gmc c sierra 2wd rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2002–2004 Factory-verified internal

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.

Yukon — GMT800 (2000–2006)

2000, 2002 Factory-verified internal

GM factory document — 2000 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 OSG in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.