E63 Factory-verified

GMC · Regular Production Option

Body equipment, fleetside pickup box

Years 1983–91, 1998–09, 2014–27 Models 21 Factory citations 92

Also described as Pickup boxBody equipment, fleetside, pickup boxPickup bed, 5 footPickup bed, 5 foot 11 inchPickup bedPickup box, Fleetside (Wideside)Body equipment, Fleetside, pickup boxPickup box, fleetside

Also documented for Cadillac Chevrolet

Documented applications

Canyon — Second generation (GMT31XX) (2015–2022)

2015–2017, 2019, 2021–2022 Factory-verified

2015–2016, 2021: S on all trims; the upfitter lists name it body equipment, fleetside pickup box

GM factory document — 2015 gmc canyon fleet order guide wayback, p.6.
GM factory document — 2016 gmc canyon fleet order guide wayback, p.6.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.10.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.10.
GM factory document — 2021 gmc canyon fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.10.

Canyon — Third generation (VSS-T) (2023–2027)

2023–2024, 2026 Factory-verified

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.10.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.11.
GM factory document — 2026 gmc canyon electrical body builder manual service manual 2026 en us, p.6.

Canyon — GMT355 (2004–2012)

2004–2009 Factory-verified

GM factory document — 2004 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2005 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2006 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2007 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2008 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2009 gmc canyon pickup 2wd rpo code list, p.1.

Hummer EV Pickup (2022–2027)

2025–2026 Factory-verified

GM factory document — 2025 gmc hummer ev pickup fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc hummer ev pickup fleet order guide, p.5.
GM factory document — 2026 gmc hummer ev pickup fleet order guide, p.5.

Sierra EV — BT1 (2024–2027)

2025–2027 Factory-verified

GM factory document — 2025 gmc sierra ev denali fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra ev denali fleet order guide, p.5.
GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide, p.9.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

all trims: S

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.6.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra — GMT400 (1988–2000)

1998–2000 Factory-verified

GM prints "fleetside"

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

Sierra — GMT800 (1999–2007)

1999–2007 Factory-verified

GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

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

Sierra HD — GMT800 (2001–2007)

2001–2007 Factory-verified

GM factory document — 2001 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 — 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.
GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

the 2014 guides call it the Wideside pickup box

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.3.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.3.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified

the 2015 guides say Wideside; 2015 marks: Sierra, SLE, SLT: S; 2018: GM's 2018 Sierra 2500HD order guide; 2019: GM's 2019 Sierra 3500HD order guide

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.3.
GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.2.
GM factory document — 2019 gmc sierra 3500hd order guide copy gm authority, p.2.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup; includes bed assist step; Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: S

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.8.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.8.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.6.

Sierra — K2XX (2014–2019)

2016–2019 Factory-verified

the 2017 manual reads fleetside pickup box.

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.18.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.88.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.39.

Sierra — Square body (1983–1991)

1983–1987, 1991 Single-source

shared platform code; cited from the square-body C/K pickup kits; printed as the Fleetside/Wideside body ordering code; 1991 from the 1991 truck-camper page, which prints the R/V 3500 bonus and crew cab models (R/V30943); 1991 rests on the Chevrolet-only truck books, so the row is single-source

GM Heritage factory kit — 1983 Chevrolet Truck, p.4.
GM Heritage factory kit — 1984 Chevrolet Truck, p.33.
GM Heritage factory kit — 1985 Chevrolet Truck, p.33.
GM Heritage factory kit — 1986 Chevrolet Truck, p.169.
GM Heritage factory kit — 1987 Chevrolet Truck, p.48.
GM Heritage factory kit — 1991 Chevrolet Truck, p.64.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

the upfitter lists read "Body equipment, fleetside pickup box"

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.10.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.11.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.11.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.11.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.13.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.10.
GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sonoma — first generation (1982–1993)

1983–1990 Factory-verified

printed as the Fleetside/Wideside body ordering code; shared S-series code; cited from the joint S-10/S-15 pages of the S-10 kits

GM Heritage factory kit — 1983 Chevrolet S 10, p.35.
GM Heritage factory kit — 1984 Chevrolet S 10, p.2.
GM Heritage factory kit — 1985 Chevrolet S 10, p.18.
GM Heritage factory kit — 1986 Chevrolet S 10, p.2.
GM Heritage factory kit — 1987 Chevrolet S 10, p.10.
GM Heritage factory kit — 1988 Chevrolet S 10, p.74.
GM Heritage factory kit — 1989 Chevrolet S 10, p.7.
GM Heritage factory kit — 1990 Chevrolet S 10, p.3.

Sonoma — second generation (1994–2004)

1998–2004 Factory-verified

1998–1999 lists read pickup box, fleetside; 2000 list adds PUBX; 2001–2004 lists read body equipment, fleetside, PUBX

GM factory document — 1998 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 1999 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2000 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2001 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2002 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2003 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2004 gmc sonoma pickup 4wd rpo code list, p.1.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

may be pickup equipment: the lists are word for word the Chevrolet and GMC pickup lists

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

Yukon — GMT400 (1992–1999)

1998–1999 Factory-verified

may be pickup equipment: the lists are word for word the Chevrolet and GMC pickup lists

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

Yukon — GMT800 (2000–2006)

2000–2002 Factory-verified

pickup box code from the shared platform list; no source shows it on a Yukon

GM factory document — 2000 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2001 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 E63 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.