Plant code, Oshawa 2, Ontario, Canada

Years 1999–01, 2009 Models 3 Factory citations 5

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Also documented for Buick Pontiac

Documented applications

Impala — ninth generation (2006–2016)

2009 Factory-verified internal

GM factory document — 2009 chevrolet impala rpo code list, p.1.

Lumina — second generation (1995–2001)

1999–2001 Factory-verified internal

GM factory document — 1999 chevrolet lumina rpo code list, p.1.
GM factory document — 2000 chevrolet lumina rpo code list, p.1.
GM factory document — 2001 chevrolet lumina rpo code list, p.1.

Monte Carlo — fifth generation, W-body (1995–1999)

1999 Factory-verified internal

GM factory document — 1999 chevrolet monte carlo rpo code list, p.1.

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