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General Motors has embraced the sharing of automobile platforms globally, although the company currently uses the term architecture rather than platform.

Traditionally, General Motors used letters from the latin alphabet to designate long-running vehicle families aimed at similar market niches. For example, the E-body Oldsmobile Toronado personal luxury coupe was redesigned significantly through four generations from 1966 through 1992, but retained the same letter designation throughout.

The chassis identification can generally be found as the 4th letter of the Vehicle Identification Number. GM also uses the letter designations to identify service manuals, owner manuals, and other publications. Frequently, the letter designations were used in mainstream automotive reporting and were familiar to customers, especially in the case of car families that were visually similar, such as the J-bodies.

In some cases, the name was retained for a market segment even while the architecture diverged radically. In 1982, the A-body switched from rear to front wheel drive. The former chassis continued, now with the G-body name, while the front drive A-body was new design. In other cases, GM has used varied letter designations for similar products. The modern G, H, and K platforms are reported to be closely related, but GM has given different letter designations to various models.

In the 2000s, GM began using a more explicit platform naming scheme based on the greek alphabet. However many latin letter-designated products are still being sold.

Current platformsEdit

Current GM platforms:

Future platforms:

Current and Historical platform applicationsEdit

As mentioned above, GM used platforms to make a hierarchy of models aimed at different market segments. The following table attempts to place each shared platform in context. As General Motors has integrated worldwide operations, platforms are now shared globally.

Front wheel driveEdit

Vehicle Type Platform Chevrolet Pontiac Oldsmobile Buick Cadillac Saturn Geo GMC Opel Daewoo
SubcompactM-bodySprint
Metro
Firefly----Metro---
SubcompactGM4200Celta-------Corsa-
SubcompactDaewoo T AveoG3
Wave
-------Kalos
SubcompactGamma
SCCS
Corsa-------Corsa
Meriva
Combo
-
CompactX-bodyCitationPhoenixOmegaSkylark------
CompactJ-bodyCavalier2000
J2000
Sunbird
Sunfire
FirenzaSkyhawkCimarron---AsconaEspero
CompactN-body
L-body
Beretta
Corsica
Malibu
Grand Am
Tempest
Cutlass Calais
Achieva
Alero
Cutlass
Skylark
Somerset
------
CompactP-bodySpectrumAsüna Sunfire----Storm
Spectrum
---
CompactT-body-LeMans
Asüna SE/GT
Passport Optima
------Kadett
Astra
Zafira
LeMans
Cielo
CompactS-bodyPrizm
Nova
Vibe----Prizm---
Compact
Compact MPV
DeltaCobalt
Cruze
HHR
Orlando
G5
G4
Pursuit
---Ion
Astra
--Astra
Zafira
Lacetti
Mid-sizeA-bodyCelebrity6000Cutlass Ciera
Cutlass Cruiser
Century------
Mid-sizeW-bodyLumina
Monte Carlo
Impala
Grand PrixCutlass Supreme
Intrigue
Regal
Century
LaCrosse
------
Mid-sizeGM2900-----L-Series--Vectra-
Mid-sizeEpsilonMalibu
Malibu Maxx
G6-Regal
LaCrosse
BLSAura--Vectra
Insignia
-
Full-sizeH-body
G-body
C-body
K-body
-BonnevilleEighty-Eight
Ninety-Eight
Aurora
LeSabre
Electra
Park Avenue
Riviera
Lucerne
Deville
Seville
DTS
-----
Personal LuxuryE-body
V-body
--ToronadoRiviera
Reatta
Eldorado
Allante
-----
Compact Crossover
Mid-size Crossover
ThetaEquinox
Captiva
Torrent--SRXVue-TerrainAntaraWinstorm
Minivan
Mid-size Crossover
U-bodyLumina APV
Venture
Uplander
Trans Sport
Montana
Aztek
SilhouetteTerraza
Rendezvous
GL8
-Relay--Sintra-
Full-size CrossoverLambdaTraverse--Enclave-Outlook-Acadia--

Rear wheel driveEdit

GM reused some platform names between the front and rear wheel drive families.

Vehicle Type Platform Chevrolet Pontiac Oldsmobile Buick Cadillac Saturn GMC Hummer Opel Holden
SubcompactH-bodyVega
Monza
Astre
Sunbird
StarfireSkyhawk------
SubcompactT-bodyChevetteT1000------KadettGemini
CompactY-body
Z-body
CorvairTempest
LeMans
F-85
Cutlass
Special
Skylark
------
CompactX-body
K-body
NovaVentura
Phoenix
OmegaApolloSeville-----
Mid-sizeA-body
G-body
Malibu
Chevelle
El Camino
Tempest
Grand Prix
LeMans
Bonneville
Cutlass
Cutlass Supreme
Special
Century
Regal
--Caballero---
Mid-size
Full-size
V-body-GTO--Catera---Commodore
Omega
Commodore
Caprice
Monaro
Mid-size
Mid-size Crossover
Sigma----CTS
STS
SRX
-----
Full-sizeB-body
C-body
D-body
Impala
Caprice
Bonneville
Catalina
Parisienne
Safari
88
98
Custom Cruiser
LeSabre
Electra
Estate
Roadmaster
DeVille
Fleetwood
Brougham
-----
Full-size
Pony car
ZetaCamaroG8-------Commodore
Caprice
Personal LuxuryE-body---Riviera------
Pony carF-bodyCamaroFirebird--------
Sports carY-bodyCorvette---XLR-----
RoadsterKappa-Solstice---Sky--GT-
Compact Pickup
Mid-size Pickup
GMT300
GMT355
S10
SSR
Colorado
-----S15
Sonoma
Canyon
--Colorado
Full-size Pickup
Full-size SUT
GMT800
GMT900
Silverado
Avalanche
---Escalade EXT-SierraH2 SUT--
Compact SUV TrackerSunrunner----Tracker---
Mid-size SUVGMT300
GMT360
Blazer
TrailBlazer
-BravadaRainier--Jimmy
Envoy
H3--
Full-size SUVGMT800
GMT900
Tahoe
Suburban
---Escalade-YukonH2--
MinivanM-bodyAstro-----Safari---
Full-size VanGMT600Express-----Savana---

OthersEdit

GM also has/had a number of non-shared and international platforms:

Badge-engineered and non-GM products:

External linksEdit


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