The American-based international automotive conglomerate General Motors (GM) underpins its many vehicle models with various platforms. These platforms are established sets of axles, suspensions, and steering mechanisms which fit various bodies and powertrains from various marques that GM owns.

From the early twentieth century, a Latin letter-based naming scheme was used to designate platforms, which were aimed at vehicles under different brands that served similar niches of the market. For example, the B platform was the base for fullsize, rear-wheel drive (RWD) sedans and wagons from 1926 to 1996. This platform underpinned vehicles made by Buick, Cadillac, Chevrolet, Marquette, Pontiac, and Oldsmobile. During the 1970s and 1980s, GM introduced many new front-wheel drive (FWD) platforms for the first time, such as the FWD C platform introduced in 1985. Despite being mechanically very new and different, it kept the same name as the RWD C platform for the sake of consistency, as most of the models remained the same, such as the Oldsmobile 98. For most of these platforms, the platform name is the fourth character of a vehicle's VIN, with a notable exception being trucks, for which it is the fifth character.

At the outset of the twenty-first century, General Motors' approach to platforms changed, and so did the nomenclature they use. Platforms themselves are now referred to by GM as "architectures", and are now named according to the English-language names of letters from the Greek alphabet, such as the subcompact Gamma platform. Today, many of the since-discontinued Latin letter platforms are informally called "bodies", such as "J-body", which refers to the J platform. In the 2010s, GM once again began to change platform nomenclature, this time to a four-character format: platform-generation-XX. An example of this is the D2XX, from the second generation of the Delta platform, hence the "D" and "2".

All but three platforms listed here use a front-mounted engine, and those exceptions are noted in the 'layout' column.

In production As of April 2020, GM produces cars, trucks, and sport utility vehicles (SUVs) of multiple different sizes on 19 different platforms: 7 of which are inherently RWD, with the rest being FWD. All but 5 of these have four-wheel drive variants as well.

+Example ImageNameLayoutIntroducedVehicles UnderpinnedNotes2020 Cadillac CT5Alpha IIRWD/AWD2019 2020–present Cadillac CT4 2020–present Cadillac CT5The successor to the Alpha I platform.2024 Chevrolet Blazer EVBEV3FWD/RWD/AWD2022 2023–2025 Buick Electra E4 2023–present Buick Electra E5 2024–present Cadillac Celestiq 2022–present Cadillac Lyriq 2024–present Cadillac Optiq 2025–present Cadillac Vistiq 2023–present Chevrolet Blazer EV 2024–present Chevrolet Equinox EVThe successor to the BEV2 platform.2024 Chevrolet Silverado EVBT1FWD/RWD/AWD2021 2021–present GMC Hummer EV 2023–present GMC Sierra EV 2023–present Chevrolet Silverado EV 2024–present Cadillac Escalade IQ2019 Chevrolet BlazerC1XXFWD/AWD2017 2017–present Cadillac XT5 2017–2023 GMC Acadia 2018–2020 Holden Acadia 2018–2024 Buick Enclave 2018–2025 Chevrolet Traverse 2019–present Chevrolet Blazer 2020–present Cadillac XT6A crossover-focused derivative of the E2XX platform.2017 Vauxhall InsigniaE2XXFWD/AWD2016 2016–2025 Chevrolet Malibu 2017–2020 Holden Commodore 2017–2022 Opel Insignia 2017–2022 Vauxhall Insignia 2017–present Buick Regal 2019–present Cadillac XT4 2021–present Buick Envision 2023–present Cadillac GT4The successor to the Epsilon II platform.2017 Chevrolet SonicGamma IIFWD/AWD2010 2010–2015 Chevrolet Spark 2010–2015 Holden Barina Spark 2010–2014 Chevrolet Sail 2011–2020 Chevrolet Sonic 2011–present Chevrolet Cobalt 2011–2018 Holden Barina 2012–present Chevrolet Spin 2013–2020 Chevrolet Trax 2013–2019 Opel Mokka 2013–2022 Buick Encore 2013–2019 Chevrolet Prisma 2013–2019 Chevrolet Onix 2016–2022 Ravon R2This generation of the Gamma platform is the first to have been developed by GM Korea, as the first generation was developed by Opel. Also used for the GMC Granite and Cadillac Urban Luxury concept cars.2019 Chevrolet TrackerGEMFWD2016 2016–2023 Chevrolet Sail 2018–2023 Buick Excelle 2019–present Chevrolet Tracker 2019–present Chevrolet Onix 2020–2022 Buick EncoreA new low-cost platform focused on developing market regions, designed by Pan Asia Technical Automotive Center, GM's joint development center with SAIC. Also called Global Emerging Markets.2016 GMC CanyonGMT 31XXRWD/AWD2012 2013–present Chevrolet Colorado 2012–2020 Holden Colorado 2012–present Isuzu D-Max 2012–2025 Chevrolet D-Max 2012–present Chevrolet S10Also called the GMT 700 platform.2012 GMC SavanaGMT 610RWD/AWD2003 2003–present Chevrolet Express 2003–present GMC Savana 2003–present Chevrolet SavanaMechanically very similar to its predecessor, the GMT 600 platform.2019 Chevrolet SIlveradoGMT T1XX platformRWD/AWD2018 2019–present Chevrolet Silverado 2019–present GMC Sierra 2019–present GMC Sierra 2500 2019–present Chevrolet Silverado 2500 2019–present GMC Sierra 3500 2019–present Chevrolet SIlverado 3500 2020–present Chevrolet Tahoe 2020–present GMC Yukon 2020–present Chevrolet Suburban 2020–present Cadillac Escalade 2020–present Cadillac Escalade ESV 2020–present GMC Yukon XLThe successor to the GMT K2XX platform.2019 Chevrolet MonzaPATAC KFWD2015 2015–2023 Buick Excelle GT 2016–2021 Chevrolet Cavalier 2017–2023 Buick GL6 2019–present Chevrolet MonzaA low-cost derivative of the D2XX platform designed by Pan Asia Technical Automotive Center, GM's joint development center with SAIC.2018 Buick GL8U IVFWD/AWD2010 2010–present Buick GL8The successor to the U III platform. This platform remains in use solely for the GL8, which is sold only in China. It is the only one of GM's Latin-letter platforms still in use.

Also called the SGM258 platform.2020 Buick Encore GXVSS-FFWD/AWD2019 2020–present Buick Encore GX 2021–present Buick Verano Pro 2022–present Buick Envista 2022–present Buick GL8 2023–present Buick LaCrosse 2020–present Chevrolet Trailblazer 2023–present Chevrolet Trax/Seeker 2023–present Chevrolet MontanaThe eventual consolidated successor to the Gamma II, G2XX, E2XX, D2XX, P2XX, PATAC K, U IV, GM4200, and GEM platforms. Slated to underpin all FWD GM cars plus subcompact crossovers by 2025.2023 Cadillac CT6VSS-RRWD/AWD2023 2023–present Cadillac CT6The eventual consolidated successor to the Alpha and Omega platforms. Slated to underpin all RWD GM vehicles by 2025.2025 Chevrolet EquinoxVSS-SFWD/AWD2024 2024–present Chevrolet Traverse 2024–present Chevrolet Equinox 2024–present Buick Enclave 2024–present GMC Acadia 2024–present GMC TerrainThe eventual consolidated successor to the D2XX and C1XX platforms. Slated to underpin all GM crossovers (excluding those on VSS-F) by 2025.2023 Chevrolet ColoradoVSS-TRWD/AWD2023 2023–present Chevrolet Colorado 2023–present GMC CanyonThe eventual consolidated successor to the GMT platforms. Slated to underpin all GM body-on-frame SUVs and trucks by 2025.2020 Chevrolet CorvetteY2XXRWD/AWD2020 2020–present Chevrolet CorvetteIndirect successor to the P I platform.

The GM nomenclature works as follows:

1st position is the platform: A – Alpha C – Chi D – Delta G – Gamma E – Epsilon P – Premium Epsilon (XTS) Y – Corvette (Y-body) L – Lambda K – Trucks

2nd position is the platform generation.

3rd position is the body style: A – Convertible B – Coupe S – Sedan J – Hatchback K – CUV? L – Long Wheel Base Sedan M – Minispace U – Crossover/CUV (5 seater) Y – SUV/Truck (7 seater)

4th position is the Brand: B – Buick C – Chevrolet G – GMC H – Holden L – Cadillac M – Citroën (partnership between GM & PSA) O – Opel/Vauxhall

5th position is an optional qualifier: for example the Sales market area: S – sales market China N – sales market North-America I – electric/hybrid

For example, E2UB-N is the Crossover Buick for the North-American market in the second generation of the Epsilon platform.

Historical applications , GM has produced cars, trucks, and SUVs of multiple different sizes on 107 different platforms: 55 of these with Latin letters, 12 with English spellings of Greek letters, and 40 others. Also, 64 of these platforms are inherently RWD, while the rest are primarily FWD. Furthermore, 50 of these have four-wheel drive variants as well.

Latin-letter platforms +Example ImageNameLayoutIntroducedEndedVehicles UnderpinnedNotes1957 Chevrolet Task ForceA IRWD19231959 1923 – 1926 Chevrolet Superior 1923 – 1931 GM Oakland 1933 – 1942 Chevrolet Master 1936 – 1939 Oldsmobile Series F 1940 – 1948 Oldsmobile Series 60 1941 – 1952 Chevrolet Deluxe 1941 – 1947 Chevrolet A/K Series 1941 – 1947 GMC A/K Series 1946 – 1948 Chevrolet Stylemaster 1946 – 1948 Chevrolet Fleetmaster 1947 – 1955 Chevrolet Advance Design 1947 – 1955 GMC New Design 1949 – 1950 Oldsmobile 88 1949 – 1949 Oldsmobile 76 1949 – 1957 Pontiac Chieftain 1950 – 1958 Pontiac Catalina 1954 – 1957 Pontiac Star Chief 1955 – 1959 Chevrolet Task Force Series 1955 – 1959 GMC Blue Chip SeriesThe first use of a shared platform by GM.1965 GM BeaumontA IIRWD19621969 1962 – 1969 GM Beaumont 1964 – 1967 Buick Sport Wagon 1964 – 1967 Buick Skylark 1964 – 1969 Buick Special 1964 – 1967 Chevrolet Chevelle 1964 – 1967 Chevrolet El Camino 1964 – 1967 Oldsmobile Vista Cruiser 1964 – 1967 Oldsmobile 442 1964 – 1967 Oldsmobile Cutlass 1964 – 1967 Pontiac GTO 1964 – 1967 Pontiac Tempest 1964 – 1967 Pontiac LeMans 1965 – 1967 Oldsmobile Cutlass SupremeThe successor to the A I platform.1972 GMC SprintA IIIRWD19681972 1968 – 1972 Buick Skylark 1968 – 1972 Buick Sport Wagon 1968 – 1972 Chevrolet Chevelle 1968 – 1972 Chevrolet El Camino 1968 – 1972 Oldsmobile 442 1968 – 1972 Oldsmobile Cutlass 1968 – 1972 Oldsmobile Cutlass Supreme 1968 – 1972 Oldsmobile Vista Cruiser 1968 – 1972 Pontiac GTO 1968 – 1970 Pontiac Tempest 1968 – 1972 Pontiac LeMans 1970 – 1972 Chevrolet Monte Carlo 1971 – 1972 GMC SprintThe successor to the A II platform.1973 Buick CenturyA IVRWD19731977 1973 – 1977 Buick Century 1973 – 1977 Buick Regal 1973 – 1977 Chevrolet Chevelle 1973 – 1977 Chevrolet El Camino 1973 – 1977 Chevrolet Monte Carlo 1973 – 1977 GMC Sprint 1973 – 1977 Oldsmobile 442 1973 – 1977 Oldsmobile Cutlass 1973 – 1977 Oldsmobile Cutlass Supreme 1973 – 1975 Pontiac Grand Am 1973 – 1977 Pontiac Grand Prix 1973 – 1977 Pontiac LeMans 1977 – 1977 Pontiac Can AmThe successor to the A III platform.1980 Chevrolet MalibuA VRWD19781981 1978 – 1981 Chevrolet Monte Carlo 1978 – 1981 GMC Caballero 1978 – 1981 Buick Century 1978 – 1981 Buick Regal 1978 – 1981 Chevrolet El Camino 1978 – 1981 Chevrolet Malibu 1978 – 1981 Oldsmobile Cutlass Supreme 1978 – 1981 Oldsmobile Cutlass 1978 – 1981 Pontiac LeMans 1978 – 1981 Pontiac Grand Prix 1978 – 1981 Pontiac Grand AmThe successor to the A IV platform.

Vehicles remaining in production for 1982 were redesignated G platform. 1996 Oldsmobile CieraA VIFWD19821996 1982 – 1990 Chevrolet Celebrity 1982 – 1991 Pontiac 6000 1981 – 1995 Oldsmobile Cutlass Ciera 1996 – 1996 Oldsmobile Ciera 1982 – 1996 Buick CenturyThe successor to the A V platform.1930 GM MarquetteB IRWD19261990 1926 – 1935 Buick Master Six 1926 – 1935 Oldsmobile Six 1929 – 1930 GM Marquette 1929 – 1931 GM Viking 1936 – 1958 Buick Century 1936 – 1958 Buick Special 1936 – 1939 Oldsmobile Series L 1936 – 1938 Cadillac Series 60 1936 – 1940 GM LaSalle 1939 – 1951 Cadillac Series 61 1939 – 1939 Oldsmobile Series G 1940 – 1940 Oldsmobile Series 70 1940 – 1940 Pontiac Deluxe 1941 – 1950 Oldsmobile Series 76 1941 – 1948 Oldsmobile Series 78 1941 – 1942 Cadillac Series 63 1942 – 1951 Pontiac Streamliner 1949 – 1968 Oldsmobile 88 1959 – 1972 Chevrolet Biscayne 1959 – 1981 Pontiac Catalina 1959 – 1981 Chevrolet Bel Air 1959 – 1981 Pontiac Bonneville