General Motors Delta platform

Main article:List of GM platforms

GM Delta platform
Overview
Manufacturer	General Motors
Production	2002–present
Body and chassis
Class	Compact(C)
Body style(s)	2-doorcoupe 2-doorconvertible 3-doorhatchback 4-doorsedan 4-doorSUV 5-doorhatchback
Chronology
Predecessor	GM J platform GM R platform GM T platform GM Z platform
Successor	For Opel & Vauxhall: PSA EMP2 platform For GM: GM VSS-F

Deltawas aGeneral Motorscompactfront-wheel driveautomobileandcrossover SUVplatform,originally developed byOpel Group.Delta was a successor to theOpelT platform;it also replacedJ platformand theZ platformused by theSaturn S-Series.The platform debuted in the 2003Saturn Ion.Vehicles of this platform generally carry the letter "A" in the fourth character of theirVINs.

Delta uses anindependent suspensionin front andTwist beamtype in the rear. TheEcotecengine is widely used, as are a 4-speedautomaticand 5-speedmanual transmission.

Delta

Applications

Former vehicles based on this platform:

• 2003–2007Saturn Ion
• 2005–2010Chevrolet Cobalt
• 2005–2009Pontiac G5/G4/Pursuit
• 2006–2011Chevrolet HHR

• 
  Saturn Ion
• 
  Chevrolet Cobalt
• 
  Pontiac G5/G4/Pursuit coupe
• 
  Chevrolet HHR

Delta II

Delta IIwasGeneral Motors' globalcompact carplatform,developed by Opel in Germany. It was the successor to the GM Delta platform. Internally it is simply known as a newGlobal Compact Vehicle Architecture or GCV.

The platform features a torsion beam (marketed ascompound crank) rear suspension with optionalWatt's linkwhich improves vehicle handling; such configuration is used with the Opel Astra, Buick Verano, Cadillac ELR, Opel Cascada and higher trim-levels of the American-market Chevrolet Cruze.

This suspension is usually described as semi-independent, meaning that the two wheels can move relative to each other, but their motion is still somewhat inter-linked, to a greater extent than in a true independent rear suspension (IRS). This can mildly compromise the handling and ride quality of the vehicle. For this reason, some manufacturers have changed to different linkage designs. As an example,Volkswagendropped the torsion beam in favour of a true IRS for theVolkswagen Golf Mk5,possibly in response to theFord Focus' Control Blade rear suspension.

As noted, certain GM brands and models have continued to use the suspension setup, known variously as twist beam,torsion beamor compound crank suspension. This is at a cost saving of €100 per car compared to multi-link rear suspension.The version used on the 2009-onOpel Astraand the 2011-2016Buick Veranouses aWatts linkageat a cost of €20 to address the drawbacks and provide a competitive and cost effective rear suspension.TheRenault MéganeandCitroen C4also have stayed with the twist beam.The twist beam has been shown to suffer less from bush wear, than fully independent multi-link suspension, thus resulting in a virtually maintenance free rear suspension.

GM chose this compact vehicle architecture for its firstVoltec application,theChevrolet Volt.Production began in November 2010 with the firstChevrolet Voltsdelivered to retails customers in December 2010.

Applications

Production vehicles based on Delta II platform:

• 2008–2016Chevrolet Cruze,Daewoo Lacetti Premiere, Holden Cruze
• 2009–2015Opel AstraJ,Buick Excelle XT
• 2010–2015Chevrolet Volt
• 2010–2018Chevrolet Orlando
• 2011–2016Buick Verano
• 2011–2015Opel Ampera
• 2011–2019Opel Zafira TourerC
• 2013–2016Cadillac ELR
• 2013–2019Opel Cascada(also marketed as Vauxhall Cascada, Holden Cascada, Buick Cascada and Opel Cabrio)
• 2017–2021Chevrolet Cavalier

• 
  Chevrolet Cruze
• 
  Daewoo Lacetti Premiere
• 
  Holden Cruze
• 
  Opel Astra J
• 
  Buick Verano
• 
  Buick Excelle XT
• 
  Buick Excelle GT
• 
  Vauxhall Astra Mk6
• 
  Chevrolet Volt (first generation)
• 
  Holden Astra
• 
  Holden Volt
• 
  Opel Zafira C
• 
  Vauxhall Zafira Mk3
• 
  Opel Ampera
• 
  Vauxhall Ampera
• 
  Chevrolet Orlando
• 
  Opel Meriva B
• 
  Vauxhall Meriva B
• 
  Cadillac ELR
• 
  Opel Cascada
• 
  Vauxhall Cascada
• 
  Buick Cascada
• 
  Holden Cascada
• 
  Chevrolet Cavalier

D2XX/D2UX

General Motors introduced its new global platform named D2XX flexible platform in August 2012. The new platform was mainly engineered by GM's former German subsidiaryOpelinRüsselsheim.According to GM the company invested US$220 million for the all new D2XX platform.

The platform was developed for compact vehicle architecture, replacing both Delta II and the midsize crossoverGM Theta platform.

Vehicles that use the new platform included:

• 2015–2023Chevrolet Cruze
• 2015–2022Opel Astra K
• 2016–2019Chevrolet Volt
• 2018–presentChevrolet Equinox
• 2018–presentGMC Terrain
• 2019–2023Chevrolet Orlando
• 2014–2020Buick Envision

• 
  Chevrolet Cruze
• 
  Holden Astra Sedan
• 
  Opel Astra K
• 
  Vauxhall Astra Mk7
• 
  Holden Astra Hatchback
• 
  Buick Verano GS
• 
  Chevrolet Volt (second generation)
• 
  Buick Velite 5
• 
  Buick Verano Sedan (third generation)
• 
  Chevrolet Equinox
• 
  Holden Equinox
• 
  GMC Terrain
• 
  Chevrolet Orlando

GM-PATAC K

In 2015Pan Asia Technical Automotive Center (PATAC),GM's joint development center withSAIC,revealed their own simplified variant of D2XX, known as the "GM-PATAC K" platform (rather than "K" so as to distinguish it from the formerGM K platforms).The following vehicles use this variant of the platform, none of which are sold in the United States:

• 2015–2023Buick Excelle GT
• 2016–presentChevrolet Cavalier
• 2017–2023Buick GL6
• 2019–presentChevrolet Monza
• 2017-presentRoewe i5/ Ei5

• 
  2018 Buick Excelle GT
• 
  2016 Chevrolet Cavalier
• 
  2019 Chevrolet Monza
• 
  2018 Buick GL6

External links

• GM Delta Enthusiasts (a part of the GM Enthusiast Network)
• "Chevy gets new compact car next year".Automotive News(2008-06-01)