General Motors Theta platform

Main article: Engineering:List of GM platforms

GM Theta platform

Overview
Manufacturer| General Motors
Production| 2002–2017
Body and chassis
Class| Compact/Mid-size crossover SUV
Vehicles| Chevrolet Captiva
Chevrolet Captiva Sport
Chevrolet Equinox
Daewoo Winstorm
Pontiac Torrent
Saturn Vue
Suzuki XL7
GMC Terrain
Saab 9-4X
Opel Antara
Chronology
Successor| GM D2XX platform (for short wheelbase)
GM C1XX platform (for long wheelbase and Theta Premium)
GM VSS-S

Theta is General Motors' automobile platform for compact/mid-size crossover SUVs. The architecture debuted in 2002 with the Saturn Vue and was later used for the Chevrolet Equinox and Captiva and similar models.

## Contents

* 1 Development
* 2 Hybrids
* 3 Vehicles
* 4 Theta Premium
* 5 References

## Development

The Theta uses a four-wheel independent suspension. Engine choices include the Family II straight-4, Ecotec straight-4, 3400 V6, and even a Honda V6, the L66. A 5-speed automatic and two 5-speed manual transmissions are used.

The original Saturn Vue used a short 106.6 in (2708 mm) wheelbase, with a 61 in (1549 mm) track. The Chevrolet Equinox and Pontiac Torrent use a stretched 112.5 in (2857 mm) wheelbase, but share much with the Saturn.

The Suzuki Grand Vitara, although similar in size and appearance to a Saturn Vue, was developed by Suzuki using some Theta components, but should not be considered a Theta derivative.

Engineering for the Opel Antara and Chevrolet Captiva was performed in large part in Korea by GM Daewoo Auto & Technology, and by Opel in Germany.

## Hybrids

The Saturn Vue was one of the first of General Motors' vehicles to be offered with a hybrid powertrain, GM's belt alternator starter (BAS) system, in 2006.

## Vehicles

* Short wheelbase
* 2002-2007 Saturn Vue
* 2006–2015 Opel Antara
* 2006-2011 Daewoo Winstorm MaXX*
* 2006–2017 Chevrolet Captiva Sport*
* 2008-2010 Saturn Vue*
* 2008-2010 GMC Terrain sold in Middle East*
* 2006-2008 Holden Captiva Maxx*
* 2009–2017 Holden Captiva 5*
* 2006–present Chevrolet Captiva
* 2006-2011 Daewoo Winstorm**
* 2006–2017 Holden Captiva 7**

Note: Vehicles with "*" are rebadged versions of the Opel Antara
Note: Vehicles with "**" are rebadged versions of the Chevrolet Captiva

* Long wheelbase
* 2005-2009 Chevrolet Equinox
* 2006-2009 Pontiac Torrent
* 2006-2009 Suzuki XL7
* 2010–2017 Chevrolet Equinox
* 2010–2017 GMC Terrain

Concepts

* Chevrolet S3X/T2X

## Theta Premium

2010 Cadillac SRX

General Motors has created a premium version of Theta for luxury applications. Reports differ, but the consensus[by whom?] is that it is a combination of the current Theta and elements of the new Epsilon 2 architecture.[1] Thus this platform is sometimes also referred to as Theta-Epsilon (GMT166).[2] Theta Premium supports larger models than the standard platform.

Vehicles using Theta Premium:

* 2010-2016 Cadillac SRX
* 2011 Saab 9-4X

## References

1. ↑ Davis, Matt (April 2011). "Saab 9-4X". Auto Express. http://www.autoexpress.co.uk/carreviews/firstdrives/267388/saab_94x.html.
2. ↑ Lassa, Todd (December 2008). "Caddyshock! GM Bets Big On Cadillac". Motor Trend. http://www.motortrend.com/future/future_vehicles/112_0812_cadillac_future_vehicle_lineup/viewall.html.

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