GMT800

Main article: List of GM platforms
GMT800
Overview
Manufacturer General Motors
Production 1999–2006
Body and chassis
Class Full size SUV
Layout FR/AWD
Body style(s) 4-door wagon
4-door extended wagon
2-door pickup truck
4-door pickup truck
Powertrain
Transmission(s) 4-sp 4L60-E automatic
4-sp 4L65-E automatic
Chronology
Predecessor GMT400
Successor GMT900

The GMT800 was the basis for the previous generation Chevrolet Silverado full-size pickup truck. The derived GMT820 and GMT830 was used in the Suburban, among other full-size SUVs. This was the successor to the GMT400 series of C/K pickups and SUVs, and was replaced for 2007 by the GMT900 line.

The GMT 800 platform was introduced in 1999. Frames were manufactured by Magna International in Ramos Arizpe, Coahuila, Mexico and St. Thomas, Ontario, Canada. Final assembly is in Oshawa, Ontario, Pontiac, Michigan, Fort Wayne, Indiana and Silao, Mexico. . The GMT820-based Hummer H2 was built under contract by AM General at a specially-constructed plant in Mishawaka, Indiana, USA.[1]

The GMT800 introduced a three section frame system, which could be mixed and matched depending on the wheelbase, GVWR, and body type fitted to the platform, rather than a single piece long frame. The front section was hydroformed. The middle and rear sections were roll formed or stamped, depending on application. This gives greater flexibility to the platform. A total of four front modules, seven midsections, and four rear sections were created to mix and match for nearly 40 different truck configurations.

Sales

Year20012002200320042005
Total sales 1,569,1981,672,8041,810,3401,704,2391,491,084

Applications

Basic platformYearsModelNotes
GMT800/8801999–2006Chevrolet Silverado Some Late 06 models were sold as 07's and are referred to as the 07 Classic so as not to be confused with the New GMT900 Series
1999–2006GMC Sierra Some Late 06 models were sold as 07's and are referred to as the 07 Classic so as not to be confused with the New GMT900 Series
GMT8202002–2006Cadillac Escalade
2000–2006Chevrolet Tahoe
2000–2006GMC Yukon
2003–2009Hummer H2A unique platform, the front used a modified utility frame, the midsection was all new and completely boxed. The rear section used an upgraded frame for the 8,600 pounds gross vehicle weight.
GMT830 Cadillac Escalade ESV
Chevrolet Suburban
GMC Yukon XL
GMT805 Chevrolet Avalanche
GMT806 Cadillac Escalade EXT

See also

Wikimedia Commons has media related to GMT800.

References

  1. Auto Plans Plenty Ward's AutoWorld
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