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Years 2008–10, 2014–18, 2022–26 Models 3 Factory citations 11

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Also documented for Cadillac Chevrolet

Documented applications

Envoy — GMT360 (2002–2009)

2009 Factory-verified

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

Savana — GMT610 (2003–2027)

2008–2010, 2014–2018, 2022–2026 Factory-verified

GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.18.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.16.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.16.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.7.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.16.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.14.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.

Yukon — GMT900 (2007–2014)

2009 Factory-verified

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

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