GMT K2XX

GMT K2XX is an assembly code for a vehicle platform architecture developed by General Motors for its line of full-size trucks and large SUVs that started production with the 2014 model year. The "XX" is a place holder for the last two digits of the specific assembly code for each model. The platform, which replaced the GMT900 series that had been in production from 2007 to 2013, was introduced in April 2013 for the 2014 Model Year on the trucks, followed by the December 2013 production on the 2015 large SUVs that debuted in February 2014.[2][3] The GMT K2XX products are being produced at four GM assembly plants: Arlington (all SUVs), Flint (double and crew cab heavy-duty pickups), and Fort Wayne (regular and double cab light- and heavy-duty pickups) in the United States, along with Silao Assembly in Mexico for the crew cab light duty pickups.

Main article: List of GM platforms
GMT K2XX
Overview
ManufacturerGeneral Motors
ProductionTrucks: April 2013-October 2019
Extended length SUVs: December 2013-December 2019
SUVs:January 2014-December 2019
Body and chassis
ClassFull-size pickup truck/SUV
LayoutFR/4WD
Body style(s)4-door SUV
4-door extended SUV
2-door pickup truck
4-door pickup truck
Powertrain
Engine(s)LV3 EcoTec3 4.3 L V6 285 hp (213 kW)[1]
L83 EcoTec3 5.3 L V8 355 hp (265 kW)[1]
L86 EcoTec3 6.2 L V8 420 hp (313 kW)[1]
LY6 Vortec 6000 6.0 L V8 360 hp (268 kW)
LML Duramax 6.6 L V8 397 hp (296 kW)
L5P Duramax 6.6 L V8 445 hp (332 kW)
Transmission(s)6-speed 6L80 automatic[1] 8-speed automatic
Dimensions
Wheelbase116.0 in (2946 mm)
Chronology
PredecessorGMT900
SuccessorGMT T1XX

The first GMT K2XX vehicles produced were the light-duty 2014 model year Chevrolet Silverado and GMC Sierra full-size pickups, with Silao producing the crew cabs first, followed afterwards by Fort Wayne assembling the light and HD regular size and double cab versions. The 2015 Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon XL, Cadillac Escalade, and Cadillac Escalade ESV full-size SUVs were the next vehicles to start production,[4][5] followed by the 2015 Chevrolet Silverado HD and GMC Sierra HD.

The K2XX platform marks the first time that no Sport Utility Trucks, hybrid trucks and hybrid SUVs will be built on this platform, as the Chevrolet Avalanche and Cadillac Escalade EXT SUTs, and the hybrid versions of the Silverado, Sierra, and full-size SUVs were discontinued after the 2013 model year.[6] However, fuel economy of GMT K2XX vehicles will still increase over the GMT 900 predecessors thanks to usage of new Generation V/EcoTec3 V8 engines with direct injection and weight savings from the use of more high-strength steel. Turbocharged and diesel engines for light-duty models are also under consideration for future GMT K2XX trucks and SUVs.

There have been customer complaints relative to driveline vibrations in the K2XX platform dubbed the "Chevy Shake".[7]

The K2XX was replaced by the GMT T1XX beginning in the 2019 model year.

Applications
Basic platformYearsModelNotesCodeIntroductionProductionSale
GMTK2XX2014-2018Chevrolet SilveradoRegular Cab
Double Cab
Crew Cab		GMTK2RC
GMTK2EC
GMTK2CC		September 26, 2013 at The Texas State FairSilao
Fort Wayne
Flint		Fall 2013
GMC SierraGMTK2RG
GMTK2EG
GMTK2CG
2015-2019Chevrolet Silverado HDGMTK2HCJanuary 2014
GMC Sierra HDGMTK2HG
2015-2020 Chevrolet Tahoe4-door SUVGMTK2UCSeptember 12, 2013Arlington December 1, 2013February 2014
GMC YukonGMTK2UG
Cadillac EscaladeGMTK2XLOctober 7, 2013April 2014
Chevrolet Suburban4-door extended SUVGMTK2YCSeptember 12, 2013February 2014
GMC Yukon XLGMTK2YG
Cadillac Escalade ESVGMTK2XLOctober 7, 2013April 2014
2019 Chevrolet Silverado LD Double Cab

See also

References
  1. "2008 Silverado Standard Features & Options". GM. 2013-05-05. Retrieved 2013-05-07.
  2. GM K2XX Vehicle Platform from GM Authority
  3. From Supercars
  4. "GM Arlington Plant Prepares For Big SUV Launch" from Dallas Morning News (December 2, 2013)
  5. "General Motors Arlington plant begins shipping 2015 full-size SUVs" Archived 2016-08-07 at the Wayback Machine from Dallas Morning News (February 7, 2014)
  6. "GM announces end of Chevy Avalanche with Black Diamond edition". Autoblog. 13 April 2012. Archived from the original on 13 April 2012. Retrieved 13 April 2012.
  7. "Mysterious, Unfixable 'Chevy Shake' Affecting Pickup Trucks Too ยป AutoGuide.com News". AutoGuide.com News. 2016-03-30. Retrieved 2017-10-20.
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