K05 Factory-verified

GMC · Regular Production Option

Heater, engine block

Years 1983–89, 1998–10, 2014–27 Models 41 Factory citations 187

Query this via API →

Also described as Engine block heaterHeater, engine coolant

Also documented for Buick Cadillac Chevrolet Hummer Oldsmobile Pontiac Saturn

Documented applications

Acadia — first generation, Lambda (2007–2017)

2007–2009, 2014–2016 Factory-verified

the 2014–2016 guides read engine block heater.

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

2019 guide: all trims: O

GM factory document — 2017 gmc acadia order guide copy gm authority, p.13, p.26.
GM factory document — 2018 gmc acadia order guide copy gm authority, p.17, p.34.
GM factory document — 2019 gmc acadia order guide copy gm authority, p.17, p.36.

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

O on all trims

GM factory document — 2025 gmc acadia fleet order guide, p.21.
GM factory document — 2026 gmc acadia fleet order guide, p.21.
GM factory document — 2027 gmc acadia fleet order guide, p.22.

Caballero — G-body (1983–1987)

1983–1987 Factory-verified

600 watts, 120 volts (1984 on); 1983: included with V10, and 1984: included with the cold climate package, code not printed; the 1986 and 1987 order guides print KO5 (letter O); 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.6.
GM Heritage factory kit — 1984 Chevrolet El Camino, p.6.
GM Heritage factory kit — 1985 Chevrolet El Camino, p.12.
GM Heritage factory kit — 1986 Chevrolet El Camino, p.6.
GM Heritage factory kit — 1987 Chevrolet El Camino, p.41.

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

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

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.11.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.11.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.11.

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

2023–2027 Factory-verified

2025: Elevation 4WD, AT4, Denali: O; Elevation 2WD: not offered; 2026–2027: Elevation 4WD, AT4, AT4X, Denali: O; Elevation 2WD: not offered

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.11.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.11.
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)

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.

Envoy — GMT360 (2002–2009)

2002–2009 Factory-verified

GM factory document — 2002 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2005 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

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

1983–1986 Factory-verified

600 watt, 120 volt; not with B3J diesel equipment; included with V10; the 1983 and 1985 pages print KO5; shared square-body platform code; cited from the Chevrolet Blazer kit

GM Heritage factory kit — 1983 Chevrolet Blazer, p.9.
GM Heritage factory kit — 1984 Chevrolet Blazer RV Full Size, p.18.
GM Heritage factory kit — 1985 Chevrolet Blazer RV Full Size, p.11.
GM Heritage factory kit — 1986 Chevrolet Blazer, p.12.

Jimmy — second generation (1995–2001)

1998–2001 Factory-verified

1998–1999 lists read engine coolant heater

GM factory document — 1998 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 1999 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 2000 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 2001 gmc jimmy 4wd rpo code list, p.1.

Jimmy — first generation (1983–1994)

1983–1984, 1986–1989 Factory-verified

600 watt, 120 volt; the 1987, 1989 pages print KO5; 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.7.
GM Heritage factory kit — 1984 Chevrolet S 10 Blazer, p.8.
GM Heritage factory kit — 1986 Chevrolet S 10 Blazer, p.8.
GM Heritage factory kit — 1987 Chevrolet S 10 Blazer, p.44.
GM Heritage factory kit — 1988 Chevrolet S 10 Blazer, p.10.
GM Heritage factory kit — 1989 Chevrolet Blazer, p.17.

Safari — First generation (1985–1994)

1986–1988 Factory-verified

the pages print engine block heater, 600 watts, 120 volts; included with V10; 1986 from the 1986 cargo van option page in the kit file named for the prior model year; the 1986 page prints KO5; shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

GM Heritage factory kit — 1985 Chevrolet Astro Van, p.28.
GM Heritage factory kit — 1987 Chevrolet Astro Van, p.27.
GM Heritage factory kit — 1988 Chevrolet Astro Van, p.7.

Safari — Second generation (1995–2005)

1998–2001, 2004, 2005 Factory-verified

2004 and 2005 lists read "Engine Block Heater".

GM factory document — 1998 gmc safari 2wd rpo code list, p.1.
GM factory document — 1999 gmc safari 2wd rpo code list, p.1.
GM factory document — 2000 gmc safari 2wd rpo code list, p.1.
GM factory document — 2001 gmc safari 2wd rpo code list, p.1.
GM factory document — 2004 gmc safari 2wd rpo code list, p.1.
GM factory document — 2005 gmc safari 2wd rpo code list, p.1.

Savana — GMT600 (1996–2002)

1998–2002 Factory-verified

the 2001–2002 lists print KO5, a letter O, and read "Engine Block Heater"; GM's other lists print K05 for the same part

GM factory document — 1998 gmc savana rpo code list, p.1.
GM factory document — 1999 gmc savana rpo code list, p.1.
GM factory document — 2000 gmc savana rpo code list, p.1.
GM factory document — 2001 gmc savana rpo code list, p.1.
GM factory document — 2002 gmc savana rpo code list, p.1.

Savana — GMT610 (2003–2027)

2003, 2006–2010, 2014–2018, 2022–2027 Factory-verified

the 2003 list reads Engine Block Heater; the 2025–2027 guides read Engine block heater; O: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT

GM factory document — 2003 gmc savana rpo code list, p.1.
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.17.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.15.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.15.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.6.
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.13.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.11.
GM factory document — 2025 gmc savana cargo fleet order guide, p.32.
GM factory document — 2025 gmc savana cutaway fleet order guide, p.39.
GM factory document — 2025 gmc savana passenger fleet order guide, p.23.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.11.
GM factory document — 2026 gmc savana cargo fleet order guide, p.34.
GM factory document — 2026 gmc savana cutaway fleet order guide, p.43.
GM factory document — 2026 gmc savana passenger fleet order guide, p.25.
GM factory document — 2027 gmc savana cargo fleet order guide, p.30.
GM factory document — 2027 gmc savana cutaway fleet order guide, p.21.
GM factory document — 2027 gmc savana passenger fleet order guide, p.23.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

Pro, Elevation, AT4, Denali: O; AT4X, Denali Ultimate: included in the trim group

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.22.
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 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

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

comes with the Duramax diesel; 2015 marks: Sierra, SLE, SLT: O; 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)

2024–2027 Factory-verified

2024: GM Authority 2024 changes page

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

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.22.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.89.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.40.

Sierra — Square body (1983–1991)

1985–1987 Factory-verified

shared platform code; cited from the square-body C/K pickup kits; 600 watt, 120 volt; included with V10; the kit pages also print KO5

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.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.11.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.12.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.12.
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.14.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.11.
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

the 1988 page prints KO5; 600 watt, 120 volt (1986–1988); 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.31.
GM Heritage factory kit — 1986 Chevrolet S 10, p.15.
GM Heritage factory kit — 1987 Chevrolet S 10, p.22.
GM Heritage factory kit — 1988 Chevrolet S 10, p.33.

Sonoma — second generation (1994–2004)

1998–2004 Factory-verified

1998–1999 lists read engine coolant heater. The 2002–2004 lists read as the 2001 list.

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

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.

Suburban — Square body (1983–1991)

1983–1989 Factory-verified

600 watt, 120 volt; not with B3J; included with V10; the 1985, 1988 and 1989 pages print KO5; shared square-body platform code; cited from the Chevrolet Suburban kit

GM Heritage factory kit — 1983 Chevrolet Suburban, p.16.
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.

Terrain — First generation (2010–2017)

2016–2017 Factory-verified

O on all trims

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

SL, SLE, SLT, Denali: O

GM factory document — 2019 gmc terrain order guide copy gm authority, p.44.

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified

O on all trims

GM factory document — 2025 gmc next generation terrain fleet order guide, p.9.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.13.
GM factory document — 2027 gmc terrain fleet order guide, p.14.

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

1983, 1984, 1986, 1988, 1989 Factory-verified

600 watts, 120 volts; the 1989 page prints KO5; 1984 from the February 1984 data book pages in the mislabelled G-Van kit file; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1983 Chevrolet Vandura, p.15.
GM Heritage factory kit — 1985 Chevrolet G Van, p.20.
GM Heritage factory kit — 1986 Chevrolet G Van, p.65.
GM Heritage factory kit — 1988 Chevrolet Vandura, p.22.
GM Heritage factory kit — 1989 Chevrolet G Van, p.17.

Yukon — GMT400 (1992–1999)

1998–1999 Factory-verified

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)

2000–2006 Factory-verified

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.
GM factory document — 2003 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.

Yukon — GMT900 (2007–2014)

2007–2009 Factory-verified

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

2015–2018: A on all trims; 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.22.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.33.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.38.
GM factory document — 2026 gmc yukon denali fleet order guide, p.39.
GM factory document — 2027 gmc yukon fleet order guide, p.35.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

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.9.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.22.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.40.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.41.
GM factory document — 2027 gmc yukon xl fleet order guide, p.36.

This page aggregates every documented appearance of K05 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.