For 2019 Silverado and Man Other Late Model Vehicles with Aero Shutters... Here is some Good Reference Materials:
Basic Information on Aero Shutters from GM:
gmauthority.com
Active Aero Shutters are occasionally assigned RPO code VTI. They are present on the following models, either as lower only, upper only, or both in the upper and lower grilles:
Chevrolet
A TSB on the Aero Shutters Tech Issues:
Basic Information on Aero Shutters from GM:
General Motors Active Aero Shutters Technology
Active Aero Shutters are a General Motors active aerodynamics technology that improve the aerodynamic performance and maximize aerodynamic efficiency of a vehicle in order to deliver better fuel economy. How It Works Electronically-controlled Active Aero Shutters[...]
gmauthority.com
Vehicle Applications
Active Aero Shutters are occasionally assigned RPO code VTI. They are present on the following models, either as lower only, upper only, or both in the upper and lower grilles:
Chevrolet
- 2014 – 2016 Spark EV
- 2010 – 2015 Cruze Eco
- 2016 – present Volt
- 2011 – 2015 Malibu
- 2014 – present Impala
- 2018 – present Equinox
- 2019 – present Blazer
- 2018 – present Traverse
- 2015 – present Tahoe
- 2015 – present Suburban
- 2015 – present Colorado
- 2017 – present Silverado 1500
- 2020 – present Silverado 2500HD (expected)
- 2020 – present Silverado 3500HD (expected)
- 2013 – 2019 ATS
- 2014 – 2019 CTS
- 2016 – present CT6
- 2017 – present XT5
- 2015 – present Escalade
- 2012 – present LaCrosse
- 2016 – present Envision
- 2018 – present Enclave
- 2018 – present Terrain
- 2017 – present Acadia
- 2015 – present Yukon
- 2015 – present Yukon XL
- 2015 – present Canyon
- 2017 – present Sierra 1500
- 2020 – present Sierra 2500HD (expected)
- 2020 – present Sierra 3500HD (expected)
A TSB on the Aero Shutters Tech Issues:
