General Motors platforms| Company type | Automotive platforms |
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| Industry | Automotive |
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| Founded | early 1900s |
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| Headquarters | United States |
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| Products | Vehicle platforms, architectures |
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The international automotive giant headquartered in the United States, General Motors (GM), supports its wide range of vehicle lines through multiple platforms—standardized assemblies comprising axles, suspension systems, and steering components designed to accommodate various body configurations and powertrain options across GM's brand portfolio.
Dating back to the early 1900s, GM employed a naming convention for its platforms based on Latin letters, each corresponding to specific market segments. For instance, the B platform served as the foundation for full-size, rear-wheel-drive sedans and station wagons from 1926 until 1996, utilized by brands including Buick, Cadillac, Chevrolet, Pontiac, and Oldsmobile. During the 1970s and 1980s, GM rolled out front-wheel-drive platforms such as the FWD C platform introduced in 1985. Despite significant mechanical shifts, legacy platform names were maintained for continuity. Typically, the platform designation is indicated by the fourth character in a vehicle's VIN number; however, for trucks, it appears as the fifth character.
Transitioning into the 21st century, GM revised its platform strategy and terminology. Platforms are now termed "architectures" and named after Greek alphabet letters—for example, the subcompact Gamma architecture. Many former Latin letter platforms are colloquially called "bodies," such as the "J-body" referring to the J platform. In the 2010s, GM began using a four-character code that combines platform and generation identifiers—for example, D2XX denotes the second iteration of the Delta architecture.
Most of these platforms feature engines mounted at the front; exceptions to this are specified separately in layout descriptions.
In production
As of April 2020, GM manufactures automobiles, trucks, and sport utility vehicles (SUVs) on nineteen distinct platforms: seven are fundamentally rear-wheel drive (RWD), while the remainder utilize front-wheel drive (FWD). Four-wheel drive (4WD) variants are available on all but five platforms.
| Example Image
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Name
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Layout
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Introduced
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Vehicles Supported
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Remarks
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2020 Cadillac CT5
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Alpha II
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RWD/AWD
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2019
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Replaced the Alpha I platform.
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2024 Chevrolet Blazer EV
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BEV3
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FWD/RWD/AWD
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2022
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Succeeded the BEV2 platform.
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2024 Chevrolet Silverado EV
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BT1
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FWD/RWD/AWD
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2021
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2019 Chevrolet Blazer
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C1XX
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FWD/AWD
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2017
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A crossover-oriented derivative of the E2XX architecture.
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2017 Vauxhall Insignia
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E2XX
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FWD/AWD
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2016
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Successor to the Epsilon II architecture.
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2017 Chevrolet Sonic
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Gamma II
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FWD/AWD
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2010
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The initial Gamma generation developed by GM Korea. Also applied in GMC Granite and Cadillac Urban Luxury concept vehicles.
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2019 Chevrolet Tracker
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GEM
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FWD
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2016
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An economical platform designed for emerging markets by Pan Asia Technical Automotive Center in partnership with SAIC; also known as Global Emerging Markets.
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2016 GMC Canyon
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GMT31XX
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RWD/AWD
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2012
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- Since early-2000s: Chevrolet Colorado, Holden Colorado, Isuzu D-Max, Chevrolet D-Max, Chevrolet S10
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"GMT700" variant of this platform.
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2012 GMC Savana
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GMT610
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RWD/AWD
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2003
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- Since early-2000s: Chevrolet Express, GMC Savana (also marketed as Chevrolet Savana)
Mechanically similar to GMT600 predecessor.
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2019 Chevrolet Silverado
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GMT T1XX platform
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RWD/AWD
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2018
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- From model year '19: Chevrolet Silverado, GMC Sierra (including heavy-duty models)
- From model year '20: Chevrolet Tahoe and Suburban; GMC Yukon and Yukon XL; Cadillac Escalade and Escalade ESV
Replaced GMT K2XX platform.
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| Example Image
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Name
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Layout
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Introduced
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Vehicles Supported
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Remarks
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2019 Chevrolet Monza2018 Buick GL82020 Buick Encore GX2023 Cadillac CT62025 Chevrolet Equinox2023 Chevrolet Colorado2020 Chevrolet Corvette
| PATAC K
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FWD
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2015
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* Buick Excelle GT (15-23)
* Chevrolet Cavalier (16-21)
* Buick GL6 (17-23)
* Chevrolet Monza (China) (19-present)
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Low-cost D2XX variant developed by Pan Asia Technical Automotive Center with SAIC.
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| U IV
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FWD/AWD
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2010
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* Buick GL8 (10-present)
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Follow-up to U III; exclusively sold in China; final Latin-letter GM platform still in production; also referred to as SGM258.
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| VSS-F
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FWD/AWD
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2019
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* Buick Encore GX (20-present)
* Buick Verano Pro (21-present)
* Buick Envista (22-present)
* Buick GL8 (22-present)
* Buick LaCrosse (23-present)
* Chevrolet Trailblazer (20-present)
* Chevrolet Trax/Seeker (23-present)
* Chevrolet Montana (23-present)
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Unified successor integrating Gamma II, G2XX, E2XX, D2XX, P2XX, PATAC K, U IV, GM4200, GEM platforms; intended to underpin all FWD GM passenger cars and subcompact crossovers by mid-decade.
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| VSS-R
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RWD/AWD
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2023
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* Cadillac CT6 (23-present)
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Consolidated replacement for Alpha and Omega architectures; planned foundation for all RWD GM vehicles by mid-decade.
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| VSS-S
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FWD/AWD
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2024
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* Chevrolet Traverse (24-present)
* Chevrolet Equinox (24-present)
* Buick Enclave (24-present)
* GMC Acadia (24-present)
* GMC Terrain (24-present)
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Merged successor to D2XX and C1XX architectures; will support all GM crossovers except those based on VSS-F by mid-decade.
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| VSS-T
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RWD/AWD
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2023
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* Chevrolet Colorado (23-present)
* GMC Canyon (23-present)
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Unified successor to GMT architectures; will underpin all GM body-on-frame trucks and SUVs by mid-decade.
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| Y2XX
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RWD/AWD
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2020
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* Chevrolet Corvette C8 (20-present)
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Indirect replacement for P I architecture.
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GM naming conventions:
- Platform letter:
- A – Alpha; C – Chi; D – Delta; G – Gamma; E – Epsilon; P – Premium Epsilon; Y – Corvette; L – Lambda; K – Trucks.
- Second character: generation number.
- Third character: body style:
- A – Convertible; B – Coupe; S – Sedan; J – Hatchback; K – Crossover Utility Vehicle?; L – Long Wheelbase Sedan; M – Minispace; U – Crossover/CUV with five seats; Y – SUV/Truck with seven seats.
- Fourth character: brand identifier:
- B – Buick; C – Chevrolet; G – GMC; H – Holden; L – Cadillac; M – Citroën(partnership); O – Opel/Vauxhall.
- Fifth character: optional qualifier indicating sales region or electric/hybrid powertrain:
- S – China market; N – North America market; I – electric/hybrid variant.
For example: E2UB-N denotes a second-generation Epsilon crossover designed for Buick sold in North America.
Historical Usage
By the year 2020, General Motors had developed vehicles—including cars, trucks, and SUVs—across 107 distinct platforms. These comprised 55 platforms designated by Latin letters, 12 identified with Greek letter names rendered in English, and an additional 40 platforms. Of these, 64 primarily featured rear-wheel drive configurations, while the remainder predominantly utilized front-wheel drive layouts. Furthermore, 50 platforms offered variants equipped with four-wheel drive.
Platforms Identified by Latin Letters
| Example Image
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Name
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Drive Layout
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Launch Year
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Discontinuation Year
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Supported Models
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Additional Information
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1957 Chevrolet Task Force
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A I
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Rear-Wheel Drive (RWD)
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1923
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1959
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GM's inaugural shared vehicle platform.
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1965 GM Beaumont
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A II
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RWD
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1962
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1969
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- 1962–1969 GM Beaumont
- 1964–1967 Buick Sport Wagon, Skylark, Special
- 1964–1967 Chevrolet Chevelle, El Camino
- 1964–1967 Oldsmobile Vista Cruiser, 442, Cutlass
- 1964–1967 Pontiac GTO, Tempest, LeMans
- 1965–1967 Oldsmobile Cutlass Supreme
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Succeeded the A I platform.
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1972 GMC Sprint
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A III
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RWD
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1968
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1972
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- 1968–1972 Buick Skylark, Sport Wagon
- Chevrolet Chevelle, El Camino (1968–72)
- Oldsmobile Cutlass series (1968–72)
- Pontiac GTO, LeMans (1968–72)
- Chevrolet Monte Carlo (1970–72)
- GMC Sprint (1971–72)
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Followed the A II platform.
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1973 Buick Century
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A IV
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RWD
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1973
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1977
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- Buick Century, Regal; Chevrolet Chevelle, El Camino, Monte Carlo; GMC Sprint; Oldsmobile Cutlass; Pontiac Grand Am, Grand Prix, LeMans; Pontiac Can Am (1977)
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Succeeded the A III platform.
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1980 Chevrolet Malibu
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A V
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RWD
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1978
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1981
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- Chevrolet Monte Carlo (1978–80), GMC Caballero; Buick Century, Regal; Chevrolet El Camino, Malibu; Oldsmobile Cutlass series; Pontiac LeMans, Grand Prix, Grand Am (all early ’80s)
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Followed the A IV platform.
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1996 Oldsmobile Ciera
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A VI
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Front-Wheel Drive (FWD)
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1982
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1996
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- Chevrolet Celebrity; Pontiac 6000; Oldsmobile Cutlass Ciera/Ciera; Buick Century
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(The last generation of the A platform; transitioned to FWD from A V.)
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B I||RWD||1926||1990||Buick Master Six, Oldsmobile Six, Marquette, Viking, Buick Century/Special, Cadillac Series61/65/60/63/75 Limousine models||GM's longest-running platform.
B II||RWD||1991||1996||Buick Roadmaster, Chevrolet Caprice, Oldsmobile Custom Cruiser||Successor to B I.
C I||RWD||1936||1984||Cadillac V-12/70/65/62/Eldorado/Deville/Fleetwood Limousine variants; Buick Roadmaster/Electra/Super/Limited; Oldsmobile Ninety-Eight; Pontiac Safari/Grand Safari; Chevrolet Kingswood/Townsman/Brookwood||Station wagons from ’71-’76 utilized B1 architecture despite extended wheelbases.
C II||FWD||1985||1996||Cadillac Series75/Fleetwood/Brougham/XLR; Buick Electra/Park Avenue; Oldsmobile Ninety-Eight/Touring Sedan; Cadillac Deville||First full-size front-wheel-drive transverse engine architecture.
D I||RWD||1936||1984||Cadillac Commercial Chassis/Series85/90/75 Limousine versions||Used for limousine and nine-passenger sedans.
D II||RWD||1985||1996||Cadillac Fleetwood Brougham/Brougham/Fleetwood Commercial Chassis||
Replaced C I platform.
E||FWD||1963||2002||Buick Riviera/Reatta; Cadillac Eldorado; Oldsmobile Toronado; Jetaway motorhome variant||
First post-World War II American front-wheel-drive vehicles.
F I-IV||RWD||1967||2002||Chevrolet Camaro; Pontiac Firebird||
Four consecutive generations of GM’s performance coupe architecture.
G I-III||RWD/FWD||1969||2011||Buick Regal/Century/Lacrosse/Allure; Chevrolet El Camino/Malibu/Monte Carlo/Impala; Oldsmobile Cutlass Supreme/Aurora/Intrigue; Pontiac Bonneville/Grand Prix/Vibe; Cadillac Seville/DTS||
Consolidated multiple platforms into G II and III for luxury and mid-size vehicles.
H I-II||RWD/FWD||1971||1999||Chevrolet Vega/Monza/Astre/Skyhawk; Pontiac Sunbird/Sunbird II; Buick LeSabre; Oldsmobile Starfire/88; Pontiac Bonneville||
Shift from rear-wheel to front-wheel drive in compact and mid-size segments.
J ||FWD||1981 ||2005 ||Buick Skyhawk; Cadillac Cimarron; Chevrolet Cavalier/Corsica/Astro derivatives; Oldsmobile Firenza/Alero; Pontiac Sunbird/Sunfire||
Succeeded H I platform for compact FWD vehicles including international models.
K I-II ||RWD/FWD ||1975 ||1999 ||Cadillac Seville/Deville||
Luxury sedan platforms transitioning from RWD to FWD layouts.
L ||FWD ||1987 ||1996 ||Chevrolet Beretta/Corsica/Pontiac Tempest||
Compact front-wheel-drive successor to X II platform.
M ||RWD/AWD ||1985 ||2005 ||Chevrolet Astro/GMC Safari vans||
Mechanically unrelated to Suzuki's FWD M platform despite name similarity.
N I-III ||FWD ||1984 ||2005 ||Pontiac Grand Am; Oldsmobile Cutlass Calais/Achieva/Alero; Buick Somerset/Skylark/Century; Chevrolet Malibu/Classic||
Merged successors of various earlier platforms including A VI and L.
P I-II ||Mid-engine RWD/FWD ||1983 ||2003 ||Pontiac Fiero; General Motors EV1 electric car||
The only mid-engine GM architecture until the Corvette C8 debuted in 2020.
R ||FWD/AWD ||1985 ||1993 ||Chevrolet Spectrum/Gemini/I-Mark/Pontiac Sunburst/Sunfire/Asüna Sunfire||
Indirect successor to T I compact architecture.
S I-V ||FWD/AWD ||1987 ||2017 ||Toyota Corolla/Sprinter variants produced through NUMMI joint ventures with GM including Geo Prizm and Pontiac Vibe||
Collaborative production with Toyota for compact cars across multiple generations.
T I-II ||RWD/FWD ||1973 ||2012 ||Opel Kadett/Astra variants; Holden Gemini/Piazza/Nova models; Daewoo LeMans/Nexia/Cielo||
Global transition from rear-wheel-drive compact cars to front-wheel-drive small cars.
U I-III ||FWD/AWD ||1989 ||2010 ||Chevrolet Lumina APV/Oldsmobile Silhouette/Pontiac Trans Sport/Venture/Buick Rendezvous/Saturn Relay||
Minivan and crossover platforms classified as GMT series for North America.
V I-II ||RWD/FWD ||1966 ||2007 ||Opel Rekord/Rekord Ranger Commodore/Omega/Vauxhall Carlton/Senator/Royale/Holden Commodore series/Cadillac Catera||
Worldwide mid-size and full-size rear-wheel-drive platforms with luxury derivatives included.
W I-III ||FWD ||1988 ||2016 ||Buick Regal/Century/Lacrosse/Allure; Oldsmobile Cutlass Supreme/Intrigue; Pontiac Grand Prix/Bonneville/Vibe; Chevrolet Lumina/Monte Carlo/Impala||
Mid-size and full-size front-wheel-drive architectures consolidating earlier designs.
X I-II ||RWD/FWD ||1961 ||1985 ||Chevrolet Chevy II/Nova/Pontiac Ventura/Phoenix/Buick Apollo/Skylark||
Compact car architectures evolving from rear-wheel to front-wheel drive configurations.
Y I-II ||RWD ||1960 ||2019 ||Buick Special/Skylark/Pontiac Tempest LeMans/Chevrolet Corvette/Cadillac XLR||
Sports performance and luxury platforms spanning decades including Corvette lineage.
Z I-II ||Rear-engine RWD/FWD ||1960 ||2002 ||Chevrolet Corvair/Saturn S series (SL/SC/SW)||
The only rear-engine GM architecture was based on the Corvair. Later Z designation applied to Saturn compact models without mechanical relation.
| Platform Name |
Drive Layout |
Start Year |
End Year |
Notable Vehicles |
Remarks
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Others
| Example Image
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Name
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Layout
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Introduced
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Ended
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Vehicles Underpinned
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Notes
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2016 Chevrolet Camaro
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Alpha I
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RWD/AWD
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2012
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2023
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This iteration of the Alpha platform continues production exclusively for the Camaro model, with plans to replace it in 2023 by the VSS-R platform.
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2019 Chevrolet Bolt
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BEV2
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FWD/RWD/AWD
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2016
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2023
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Developed as the successor to the P II platform.
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2004 Saturn Ion
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Delta I
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FWD
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2003
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2014
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- 2003–2007 Saturn Ion
- 2004–2014 Opel Astra, Vauxhall Astra
- 2004–2010 Chevrolet Cobalt
- 2005–2011 Chevrolet Astra, Holden Astra
- 2005–2006 Pontiac Pursuit, Pontiac G4
- 2005–2009 Opel Zafira, Vauxhall Zafira; 2009–2014 Chevrolet Zafira
- 2006–2011 Chevrolet HHR
- 2007–2011 Chevrolet Vectra, Pontiac G5, Saturn Astra
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Served as a unified replacement for the J, R, T II, and Z II platforms; also identified as GMT 001 in relation to the HHR.
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2014 Vauxhall Ampera
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Delta II
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FWD/AWD
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2008
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2019
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- 2008–2016 Chevrolet Cruze, Holden Cruze, Daewoo Lacetti Premiere
- 2009–2015 Opel Astra, Vauxhall Astra; 2009–2016 Buick Excelle
- 2010–2019 Chevrolet Volt, Buick Velite 5, Opel Ampera, Vauxhall Ampera
- 2010–2018 Chevrolet Orlando; 2011–2019 Opel Zafira Tourer, Vauxhall Zafira Tourer
- 2012–2017 Buick Verano; 2013–2019 Opel Cascada, Buick Cascada, Vauxhall Cascada; 2014–2017 Holden Cascada
- 2013–2018 Baojun 560; 2013–2016 Cadillac ELR
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Succeeded the Delta I platform.
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2018 GMC Terrain
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D2XX
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FWD/AWD
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2012
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2024
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- 2015–2023 Chevrolet Cruze, Buick Envision; 2015–2021 Opel Astra, Vauxhall Astra; 2015–2020 Holden Astra
- 2015–2021 Buick Verano; 2016–2019 Chevrolet Volt (second generation), Buick Velite 5
- 2018–2024 Chevrolet Equinox, GMC Terrain; 2019–2023 Chevrolet Orlando
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Represents the evolution following Delta II and Theta platforms under GM’s most recent naming system.
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2008 Cadillac BLS
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Epsilon I
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FWD/AWD
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2002
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2014
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- 2002–2008 Opel Vectra, Vauxhall Vectra; 2002–2007 Holden Vectra; 2002–2014 Saab 9-3
- 2003–2008 Opel Signum, Vauxhall Signum; 2004–2012 Chevrolet Malibu
- 2005–2010 Pontiac G6; 2005–2011 Fiat Croma; 2006 Chevrolet Vectra; 2007–2010 Saturn Aura
- Also applied to Cadillac BLS (introduced in ’06) and Saab PhoeniX concept.
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Combined successor to G III, N III, GM2900, W, and Zeta platforms.
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2014 Roewe 950
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Epsilon II
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FWD/AWD
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2008
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2019
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- 2008–2017 Opel Insignia, Vauxhall Insignia; 2008–2010 Chevrolet Vectra
- 2010–2016 Buick LaCrosse/Allure; GM Alpheon (Korea)
- 2010–12 Saab 9-5; 2011-17 Buick Regal
- SAIC Roewe 950 (China) until 2022; Cadillac XTS (until ’19); Chevrolet Malibu (until ’16); Holden Malibu (’13-’16); Holden Insignia (’15-’17)
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Followed the original Epsilon I platform. Also utilized for Buick Riviera and Opel GTC concept vehicles.
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Future platforms
In 2015, General Motors revealed its intention to streamline its vehicle architecture into four primary platforms by the year 2025, with the exception of the eighth-generation Chevrolet Corvette. Among these, the VSS-F platform has already been introduced:
Vehicle Set Strategy
| Name
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Configuration
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Launch Year
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Supported Models
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Details
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| VSS-F
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FWD/AWD
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2019
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- 4th generation Chevrolet Sail (China; B segment)
- 3rd generation Chevrolet Spark (A segment)
- 2nd generation Chevrolet Sonic (B segment)
- 5th generation Chevrolet Cavalier (China; C segment)
- 3rd generation Chevrolet Onix (South America; B segment)
- 2nd generation Chevrolet Spin (South America; B segment)
- 3rd generation Chevrolet Cobalt (South America; C/B segment)
- 2nd generation Chevrolet Montana (South America; C/B segment)
- 2nd generation Chevrolet Prisma (South America; C segment)
- 3rd generation Chevrolet Cruze (C segment)
- 10th generation Chevrolet Malibu (D segment)
- 11th generation Chevrolet Impala (E segment)
- 3rd generation Chevrolet Volt (C segment hybrid electric)
- 2nd generation Chevrolet Bolt EV (A/B pure electric)
- 3rd generation Buick Verano (China; C segment)
- 3rd generation Buick Excelle (China; B segment)
- 7th generation Buick Regal (D segment)
- 4th generation Buick LaCrosse (E segment)
- 1st generation Buick Velite (C segment)
- 4th generation Buick GL8 (E segment)
- 1st generation Cadillac CT2 or CT3 (B segment)
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Combines Gamma II, G2XX, E2XX, D2XX, P2XX, PATAC K, U IV, GM4200, and GEM platforms. Designed to support all front-wheel-drive GM cars and subcompact crossovers by 2025.
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| VSS-R
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RWD/AWD
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2023
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- 7th generation Chevrolet Camaro (pony car)
- 2nd generation Chevrolet SS (D segment)
- 2nd generation Cadillac CT3 or CT4 (C segment)
- 2nd generation Cadillac CT5 (E segment)
- 2nd/3rd generation Cadillac CT6 (F segment)
- 2nd generation Cadillac Escala (F segment)
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Merges Alpha and Omega platforms. Intended to serve as the foundation for all rear-wheel-drive GM vehicles by 2025.
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| VSS-S
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FWD/AWD
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2024
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- 4th generation Chevrolet Blazer (midsize SUV)
- 3rd generation Chevrolet Traverse (full-size SUV)
- 2nd generation Chevrolet Trax/Tracker (subcompact SUV)
- 4th generation Chevrolet Equinox (compact SUV)
- 3rd generation Buick Enclave (full-size SUV)
- 1st generation Buick Enspire (midsize SUV concept)
- 2nd generation Buick Encore (subcompact SUV)
- 2nd generation Buick Envision (compact SUV)
- 3rd generation GMC Acadia (midsize SUV)
- 1st generation GMC Acadia XL (full-size SUV)
- 1st generation GMC Granite (subcompact SUV concept)
- 3rd generation GMC Terrain (compact SUV)
- 2nd generation Cadillac XT5 (midsize SUV)
- 2nd generation Cadillac XT6 (full-size SUV)
- 1st generation Cadillac XT2 or XT3 (subcompact SUVs concept)
- 2nd generation Cadillac XT4 (compact SUV)
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Integrates D2XX and C1XX platforms. Planned to underpin all GM crossover vehicles except those based on VSS-F by the year 2025.
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| VSS-T
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RWD/AWD
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2025
|
- 4th generation Chevrolet Silverado (full-size pickup truck)
- 6th generation Chevrolet Tahoe (full-size SUV)
- 13th generation Chevrolet Suburban (extended full-size SUV)
- 3rd generation Chevrolet Colorado (mid-size pickup truck)
- Upcoming midsize SUV or Trailblazer for markets beyond North America
- 2nd generation Chevrolet Express (full-size van)
- 3rd generation GMC Canyon (mid-size pickup truck)
- 5th generation GMC Sierra (full-size pickup truck)
- 6th generation GMC Yukon and Yukon XL (full-size SUVs)
- 2nd generation GMC Savana (full-size van)
- 6th generation Cadillac Escalade (full-size SUV)
|
Consolidates GMT platforms. Will serve as the base for all GM body-on-frame trucks and SUVs by the year 2025.
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It is still uncertain whether the GEM platform or a comparable cost-effective architecture will persist as a subset within the VSS framework.
EV platforms
- BEV2, the platform supporting the Chevrolet Bolt and Chevrolet Menlo
- BEV3, the structural base for the Chevrolet Equinox EV and Chevrolet Blazer EV
- Ultium, the core architecture for the GMC Hummer EV and Cadillac Lyriq
