Engineering:GM R platform

Short description: Former Japanese-American car platform

The GM R platform is a platform manufactured by General Motors from 1985-1993.

GM R platform
Isuzu Gemini, an example of a GM R platform vehicle
Overview
Production	1985–1993
Body and chassis
Layout	FF layout
Body style(s)	3-door hatchback coupe 4-door sedan
Powertrain
Engine(s)	1297 cc 4XB1 I4 (JT140, export only) 1471 cc 4XC1 (LC5) I4 (JT150) 1471 cc 4XC1-T (LC0) turbo I4 (JT150) 1588 cc 4XE1 DOHC I4 (JT190) 1487 cc 4EC1 diesel/TD I4 (JT600)
Transmission(s)	3-speed automatic 5-speed manual 5-speed semi-automatic (NAVi5)
Dimensions
Wheelbase	2,400 mm (94.5 in)
Length	I-Mark Hatchback Coupe: 4,011 mm (157.9 in) I-Mark Sedan: 4,082 mm (160.7 in) Spectrum Hatchback Coupe: 3,998 mm (157.4 in) Spectrum Sedan: 4,069 mm (160.2 in)
Width	I-Mark: 1,613 mm (63.5 in) Spectrum: 1,615 mm (63.6 in)
Height	I-Mark: 1,374 mm (54.1 in) Spectrum: 1,321 mm (52.0 in)
Chronology
Predecessor	Chevrolet Chevette (Spectrum) Opel Isuzu (I-Mark) Pontiac Acadian (Sunburst)
Successor	Isuzu Stylus (I-Mark) Passport Optima (Sunburst) Geo Storm (Spectrum, hatchback) Geo Prizm (Spectrum, sedan)

Vehicles

• 1985 - 1988 Chevrolet Spectrum
• 1985 - 1986 Holden Gemini
• 1985 - 1993 Isuzu Gemini
• 1985 - 1989 Isuzu I-Mark
• 1985 - 1990 Chevrolet Gemini
• 1985 - 1989 Pontiac Sunburst
• 1988 - 1989 Geo Spectrum
• 1990 - 1993 Isuzu Piazza
• 1990 - 1993 Isuzu Impulse
• 1990 - 1993 Asüna Sunfire
• 1990 - 1993 Isuzu Stylus