Provisions, roof-mounted lamp

Years 2001–02, 2004–09, 2016–19 Models 4 Factory citations 15

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Also described as Grille, radiator, body colorGrille, body colorGrille surround, body-color

Also documented for Cadillac Chevrolet

Documented applications

Envoy — GMT360 (2002–2009)

2008, 2009 Factory-verified

GM factory document — 2008 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

Sierra — GMT800 (1999–2007)

2001 Factory-verified

the 2001 list gives TRB the same wording as TRW; the 2002–2007 lists use TRB for a body-color grille

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.
2002, 2004–2007 Factory-verified

the 2001 list prints another wording (see the 2001 row)

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

Sierra — K2XX (2014–2019)

2016–2019 Factory-verified

new for 2016.

GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.33.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.91.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.41.

Yukon — GMT800 (2000–2006)

2001 Factory-verified

the 2001 list gives TRB the wording of TRW; the 2002–2006 lists use TRB for a body-color grille

GM factory document — 2001 gmc yukon 2wd rpo code list, p.1.
2002, 2004–2006 Factory-verified

the 2001 list prints another wording (see the 2001 row)

GM factory document — 2002 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2004 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2005 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2006 gmc yukon 2wd rpo code list, p.1.

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