# 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 placeholder 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. The GMT K2XX products were 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.
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 cab 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, followed by the 2015 Chevrolet Silverado HD and GMC Sierra HD.
The K2XX platform marks the first time that no sport utility trucks or hybrid SUVs would 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. However, fuel economy of GMT K2XX vehicles still increased over the GMT900 predecessors thanks to usage of new Generation V/EcoTec3 V8 engines with direct injection, weight savings from the use of more high-strength steel, and the use of the 8L90 automatic transmission. An eAssist mild hybrid version of the Chevrolet Silverado and GMC Sierra crew-cab pickup trucks became available on a limited basis from 2016 to 2018. Turbocharged and diesel engines for light-duty models were also under consideration for future GMT K2XX trucks and SUVs.
There have been customer complaints relative to 8L90 driveline vibrations in the K2XX platform dubbed the "Chevy Shake".
The K2XX was replaced by the GMT T1XX beginning in the 2019 model year.

## Applications

* 2015 Chevrolet Suburban
* 2015 GMC Yukon XL Denali
* 2015 Chevrolet Tahoe
* 2015 GMC Yukon
* 2014 Chevrolet Silverado
* 2014 GMC Sierra
* 2015 Cadillac Escalade ESV
| Basic platform | Years | Model | Notes | Code | Introduction | Production | Sale |
| GMTK2XX | 2014–2018 | Chevrolet Silverado | Regular Cab Double Cab Crew Cab | GMTK2RC GMTK2EC GMTK2CC | September 26, 2013 at The Texas State Fair | Silao Fort Wayne Flint | Fall 2013 |
| GMTK2XX | 2014–2018 | GMC Sierra | Regular Cab Double Cab Crew Cab | GMTK2RG GMTK2EG GMTK2CG | September 26, 2013 at The Texas State Fair | Silao Fort Wayne Flint | Fall 2013 |
| GMTK2XX | 2015–2019 | Chevrolet Silverado HD | Regular Cab Double Cab Crew Cab | GMTK2HC | September 26, 2013 at The Texas State Fair | Silao Fort Wayne Flint | January 2014 |
| GMTK2XX | 2015–2019 | GMC Sierra HD | Regular Cab Double Cab Crew Cab | GMTK2HG | September 26, 2013 at The Texas State Fair | Silao Fort Wayne Flint | January 2014 |
| GMTK2XX | 2015–2020 | Chevrolet Tahoe | 4-door SUV | GMTK2UC | September 12, 2013 | Arlington December 1, 2013 | February 2014 |
| GMTK2XX | 2015–2020 | GMC Yukon | 4-door SUV | GMTK2UG | September 12, 2013 | Arlington December 1, 2013 | February 2014 |
| GMTK2XX | 2015–2020 | Cadillac Escalade | 4-door SUV | GMTK2UL | October 7, 2013 | Arlington December 1, 2013 | April 2014 |
| GMTK2XX | 2015–2020 | Chevrolet Suburban | 4-door extended SUV | GMTK2YC | September 12, 2013 | Arlington December 1, 2013 | February 2014 |
| GMTK2XX | 2015–2020 | GMC Yukon XL | 4-door extended SUV | GMTK2YG | September 12, 2013 | Arlington December 1, 2013 | February 2014 |
| GMTK2XX | 2015–2020 | Cadillac Escalade ESV | 4-door extended SUV | GMTK2YL | October 7, 2013 | Arlington December 1, 2013 | April 2014 |
| GMTK2XX | 2019 | Chevrolet Silverado LD | Double Cab | GMTK2EC | | Oshawa | |