YF5 Factory-verified

GMC · Regular Production Option

Emissions, California

Years 1983–89, 1998–02, 2005–10, 2014–27 Models 42 Factory citations 164

Also described as Certification, emission, CaliforniaEmissions, California requirementsEmissions, California state requirementsEmission system, CaliforniaEmission certificate, CaliforniaEmission system, California customer

Also documented for Buick Cadillac Chevrolet Hummer Oldsmobile Pontiac Saturn

Documented applications

Acadia — first generation, Lambda (2007–2017)

2007–2009, 2014–2016 Factory-verified internal

the 2014–2016 guides read California state emission requirements.

GM factory document — 2007 gmc acadia 2wd rpo code list, p.1.
GM factory document — 2008 gmc acadia 2wd rpo code list, p.1.
GM factory document — 2009 gmc acadia 2wd rpo code list, p.1.
GM factory document — 2014 gmc acadia fleet order guide wayback, p.4.
GM factory document — 2015 gmc acadia fleet order guide wayback, p.4.
GM factory document — 2016 gmc acadia fleet order guide wayback, p.4.

Acadia — Second generation (C1XX) (2017–2023)

2017–2019 Factory-verified internal

; all trims: O

GM factory document — 2017 gmc acadia order guide copy gm authority, p.12, p.24.
GM factory document — 2018 gmc acadia order guide copy gm authority, p.15, p.32.
GM factory document — 2019 gmc acadia order guide copy gm authority, p.16, p.34.

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified internal

; O on all trims

GM factory document — 2025 gmc acadia fleet order guide, p.20.
GM factory document — 2026 gmc acadia fleet order guide, p.20.
GM factory document — 2027 gmc acadia fleet order guide, p.21.

Caballero — G-body (1983–1987)

1983–1987 Factory-verified internal

Shared G-body platform code; cited from the joint El Camino/Caballero pages of the Chevrolet El Camino kits

GM Heritage factory kit — 1983 Chevrolet El Camino, p.5.
GM Heritage factory kit — 1984 Chevrolet El Camino, p.5.
GM Heritage factory kit — 1985 Chevrolet El Camino, p.11.
GM Heritage factory kit — 1986 Chevrolet El Camino, p.5.
GM Heritage factory kit — 1987 Chevrolet El Camino, p.45.

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

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

; 2015–2016: O on all trims; 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2015 gmc canyon fleet order guide wayback, p.7.
GM factory document — 2016 gmc canyon fleet order guide wayback, p.2.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.19.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.13.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.14.

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

2023–2027 Factory-verified internal

; O on all trims

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.14.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.15.
GM factory document — 2025 gmc canyon fleet order guide, p.19.
GM factory document — 2026 gmc canyon fleet order guide, p.27.
GM factory document — 2027 gmc canyon fleet order guide, p.27.

Canyon — GMT355 (2004–2012)

2005–2009 Factory-verified internal

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 internal

the pickup lists print "Emissions, California state requirements"

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.

Hummer EV SUV — BT1 (2024–2027)

2025–2026 Factory-verified internal

2025: O in 1SF, 1SG; 2026: O in 3VL, 1SF, 1SG.

GM factory document — 2025 gmc hummer ev suv fleet order guide, p.24.
GM factory document — 2026 gmc hummer ev suv fleet order guide, p.29.

Jimmy (full-size) — Square body (1983–1991)

1983–1986 Factory-verified internal

1985 from the power team chart heading; shared square-body platform code; cited from the Chevrolet Blazer kit

GM Heritage factory kit — 1983 Chevrolet Blazer, p.7.
GM Heritage factory kit — 1984 Chevrolet Blazer RV Full Size, p.16.
GM Heritage factory kit — 1985 Chevrolet Blazer RV Full Size, p.6.
GM Heritage factory kit — 1986 Chevrolet Blazer, p.10.

Jimmy — second generation (1995–2001)

2001 Factory-verified internal

GM factory document — 2001 gmc jimmy 4wd rpo code list, p.1.

Jimmy — first generation (1983–1994)

1983, 1986–1987, 1989 Factory-verified internal

shared S/T platform code; cited from the joint S-10/15 Blazer/Jimmy pages of the S-10 Blazer kit

GM Heritage factory kit — 1983 Chevrolet S 10 Blazer, p.6.
GM Heritage factory kit — 1986 Chevrolet S 10 Blazer, p.6.
GM Heritage factory kit — 1987 Chevrolet S 10 Blazer, p.42.
GM Heritage factory kit — 1989 Chevrolet Blazer, p.15.

Safari — First generation (1985–1994)

1986–1988 Factory-verified internal

; printed in the power team chart headings; years follow the dates printed on the pages, not the kit file names (1987 kit page 24 and 1988 kit page 4 are dated September 1987, 1988 kit page 24 February 1987); 1986 from the 1986 pages in the kit file named for the prior model year; shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

GM Heritage factory kit — 1985 Chevrolet Astro Van, p.4.
GM Heritage factory kit — 1987 Chevrolet Astro Van, p.12.
GM Heritage factory kit — 1987 Chevrolet Astro Van, p.24.
GM Heritage factory kit — 1988 Chevrolet Astro Van, p.4.
GM Heritage factory kit — 1988 Chevrolet Astro Van, p.24.

Safari — Second generation (1995–2005)

1998, 1999 Factory-verified internal

1998 list reads "Emissions: California".

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

Savana — GMT610 (2003–2027)

2006–2010, 2014–2018, 2022–2027 Factory-verified internal

; the 2025–2027 guides read Emissions, California state requirements; O: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT

GM factory document — 2006 gmc savana rpo code list, p.1.
GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.19.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.17.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.17.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.8.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.17.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.15.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.13.
GM factory document — 2025 gmc savana cargo fleet order guide, p.30.
GM factory document — 2025 gmc savana cutaway fleet order guide, p.38.
GM factory document — 2025 gmc savana passenger fleet order guide, p.22.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.13.
GM factory document — 2026 gmc savana cargo fleet order guide, p.32.
GM factory document — 2026 gmc savana cutaway fleet order guide, p.41.
GM factory document — 2026 gmc savana passenger fleet order guide, p.24.
GM factory document — 2027 gmc savana cargo fleet order guide, p.29.
GM factory document — 2027 gmc savana cutaway fleet order guide, p.20.
GM factory document — 2027 gmc savana passenger fleet order guide, p.22.

Sierra EV — BT1 (2024–2027)

2025–2027 Factory-verified internal

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.10.
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.20.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified internal

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.44.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra — GMT400 (1988–2000)

1998 Factory-verified internal

GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.

Sierra — GMT800 (1999–2007)

1999–2000, 2005–2007 Factory-verified internal

GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2000 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 — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified internal

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

Sierra HD — GMT800 (2001–2007)

2005–2007 Factory-verified internal

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 internal

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.4.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.4.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified internal

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.4.
GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.25.
GM factory document — 2019 gmc sierra 3500hd order guide copy gm authority, p.23.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified internal

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.

Sierra — K2XX (2014–2019)

2014, 2016–2019 Factory-verified internal

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.39.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.92.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.42.

Sierra — Square body (1983–1991)

1983–1987 Factory-verified internal

shared platform code; cited from the square-body C/K pickup kits

GM Heritage factory kit — 1983 Chevrolet Truck, p.14.
GM Heritage factory kit — 1984 Chevrolet Truck, p.37.
GM Heritage factory kit — 1985 Chevrolet Truck, p.36.
GM Heritage factory kit — 1986 Chevrolet Truck, p.166.
GM Heritage factory kit — 1987 Chevrolet Truck, p.51.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified internal

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.15.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.16.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.16.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.16.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.18.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.17.
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)

1983–1986, 1988 Factory-verified internal

1984 from a requirement remark; 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.37.
GM Heritage factory kit — 1984 Chevrolet S 10, p.14.
GM Heritage factory kit — 1985 Chevrolet S 10, p.17.
GM Heritage factory kit — 1986 Chevrolet S 10, p.9.
GM Heritage factory kit — 1988 Chevrolet S 10, p.84.

Sonoma — second generation (1994–2004)

2001–2002 Factory-verified internal

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.

Suburban — GMT400 (1992–1999)

1998 Factory-verified internal

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

Suburban — Square body (1983–1991)

1983–1989 Factory-verified internal

1989 from the option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit

GM Heritage factory kit — 1983 Chevrolet Suburban, p.13.
GM Heritage factory kit — 1984 Chevrolet Suburban, p.16.
GM Heritage factory kit — 1985 Chevrolet Suburban, p.15.
GM Heritage factory kit — 1986 Chevrolet Suburban, p.15.
GM Heritage factory kit — 1987 Chevrolet Suburban, p.21.
GM Heritage factory kit — 1988 Chevrolet Suburban, p.15.
GM Heritage factory kit — 1989 Chevrolet Suburban, p.14.

Terrain — First generation (2010–2017)

2016–2017 Factory-verified internal

GM factory document — 2016 gmc terrain fleet order guide wayback, p.4.
GM factory document — 2017 gmc terrain fleet order guide wayback, p.4.

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified internal

GM factory document — 2019 gmc terrain order guide copy gm authority, p.43.

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified internal

; O on all trims

GM factory document — 2025 gmc next generation terrain fleet order guide, p.8.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.12.
GM factory document — 2027 gmc terrain fleet order guide, p.13.

Vandura and Rally — Second generation G-series (1983–1996)

1983, 1984, 1986–1988 Factory-verified internal

1987 and 1988 from the power team block headings; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1983 Chevrolet Vandura, p.12.
GM Heritage factory kit — 1984 Chevrolet G Van, p.14.
GM Heritage factory kit — 1986 Chevrolet G Van, p.21.
GM Heritage factory kit — 1987 Chevrolet G Van, p.14.
GM Heritage factory kit — 1988 Chevrolet Vandura, p.11.

Yukon — GMT400 (1992–1999)

1998 Factory-verified internal

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

Yukon — GMT800 (2000–2006)

2000 Factory-verified internal

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

Yukon — GMT900 (2007–2014)

2007–2009 Factory-verified internal

GM factory document — 2007 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

Yukon — K2XX (2015–2020)

2015–2018 Factory-verified internal

; 2018 from GM's 2018 Yukon order guide

GM factory document — 2015 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2016 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.39.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.32.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified internal

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.13.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.14.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.36.
GM factory document — 2026 gmc yukon denali fleet order guide, p.37.
GM factory document — 2027 gmc yukon fleet order guide, p.33.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified internal

A on all trims

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.4.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.19.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.39.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified internal

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.13.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.14.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.38.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.39.
GM factory document — 2027 gmc yukon xl fleet order guide, p.35.

This page aggregates every documented appearance of YF5 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.