Lamp, roof marker, five

Years 1967–82, 1984–09, 2014, 2016–19, 2023, 2025–27 Models 16 Factory citations 89

Also described as Roof marker/clearance lampsRoof marker lampsRoof marker lamps (five)Lamp, five, roof marker, truckLamps, roof marker, smoked amberLamps, roof marker, Smoked Amber

Also documented for Cadillac GMC

Documented applications

C/K Trucks

1967–72 Confirmed

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1973–82 Confirmed

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Avalanche — GMT800 (2002–2006)

2002–2006 Factory-verified

GM factory document — 2002 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet avalanche 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Avalanche, p.56.
GM Heritage factory kit — 2003 Chevrolet Avalanche, p.37.
GM Heritage factory kit — 2004 Chevrolet Avalanche, p.36.

C/K pickup — GMT400 (1988–2000)

1988–1990, 1992–1994, 1996–2000 Factory-verified

the kit pages also print UO1, UOI; the 1988 kit citation prints the code only inside another option's cross-reference (no defining line found)

GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM Heritage factory kit — 1988 Chevrolet Truck, p.142.
GM Heritage factory kit — 1989 Chevrolet Truck, p.32.
GM Heritage factory kit — 1990 Chevrolet Truck, p.36.
GM Heritage factory kit — 1992 Chevrolet Truck, p.34.
GM Heritage factory kit — 1993 Chevrolet Truck, p.36.
GM Heritage factory kit — 1994 Chevrolet Truck, p.22.
GM Heritage factory kit — 1996 Chevrolet Truck, p.76.
GM Heritage factory kit — 1997 Chevrolet Truck, p.43.

C/K pickup — Square body (1983–1991)

1984–1987 Factory-verified

included with R05 dual rear wheels; the kit pages also print UO1

GM Heritage factory kit — 1984 Chevrolet Truck, p.48.
GM Heritage factory kit — 1985 Chevrolet Truck, p.43.
GM Heritage factory kit — 1986 Chevrolet Truck, p.158.
GM Heritage factory kit — 1987 Chevrolet Truck, p.58.

Silverado — GMT800 (1999–2007)

2000–2001, 2003–2007 Factory-verified

the 2000–2001 lists print it with a letter O (UO1)

GM factory document — 2003 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Truck and Silverado, p.58.
GM Heritage factory kit — 2001 Chevrolet Silverado, p.58.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.61.

Silverado — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT800 (2001–2007)

2001, 2003–2007 Factory-verified

the 2001 list prints it with a letter O (UO1)

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Silverado 2500HD, p.175.

Silverado HD — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

the 2014 guide describes smoked amber roof marker lamps

GM factory document — 2007 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2014 chevrolet silverado 3500hd cc fleet order guide wayback, p.3.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.20.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.30.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.30.

Silverado HD (T1XX, 2020–2027)

2023, 2025–2027 Factory-verified

GM factory document — 2023 chevrolet 23silverado 2500 3500hd electrical body builder sm en us 2022oct12, p.13.
GM factory document — 2025 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.

Silverado Medium Duty (GM515, 2019–2026)

2025–2026 Factory-verified

GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

Suburban — GMT400 (1992–1999)

1993–1995, 1997–1999 Factory-verified

GM Heritage factory kit — 1993 Chevrolet Suburban, p.5.
GM Heritage factory kit — 1994 Chevrolet Suburban, p.16.
GM Heritage factory kit — 1995 Chevrolet Suburban, p.17.
GM Heritage factory kit — 1997 Chevrolet Suburban, p.29.
GM factory document — 1998 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy suburban 2wd rpo code list, p.1.

Suburban — GMT800 (2000–2006)

2000–2006 Factory-verified

the 2000–2001 lists print UO1 (letter O) and word it as five roof marker lamps

GM factory document — 2000 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Suburban, p.48.
GM Heritage factory kit — 2001 Chevrolet Suburban, p.53.
GM Heritage factory kit — 2002 Chevrolet Suburban, p.39.
GM Heritage factory kit — 2003 Chevrolet Suburban, p.40.
GM Heritage factory kit — 2005 Chevrolet Suburban, p.158.

Suburban — Square body (1983–1991)

1984–1991 Factory-verified

not with YF5; the 1989 and 1991 pages print UOI and UO1

GM Heritage factory kit — 1984 Chevrolet Suburban, p.22.
GM Heritage factory kit — 1985 Chevrolet Suburban, p.19.
GM Heritage factory kit — 1986 Chevrolet Suburban, p.20.
GM Heritage factory kit — 1987 Chevrolet Suburban, p.25.
GM Heritage factory kit — 1988 Chevrolet Suburban, p.18.
GM Heritage factory kit — 1989 Chevrolet Suburban, p.16.
GM Heritage factory kit — 1990 Chevrolet Suburban, p.18.
GM Heritage factory kit — 1991 Chevrolet Suburban, p.18.

Tahoe — GMT400 (1995–1999)

1998–1999 Factory-verified

GM factory document — 1998 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet tahoe 2wd rpo code list, p.1.

Tahoe — GMT800 (2000–2006)

2000–2006 Factory-verified

the 2000–2001 lists print UO1 (letter O) and word it as five roof marker lamps

GM factory document — 2000 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Tahoe, p.32.
GM Heritage factory kit — 2003 Chevrolet Tahoe, p.33.
GM Heritage factory kit — 2004 Chevrolet Tahoe, p.35.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.29.

This page aggregates every documented appearance of U01 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.