International SyTy Registry

GMC Syclone, Typhoon, & Sonoma GT History and Data

Syclone Challenge
With the launch of the GMC Syclone in 1991, a promotional event was created, planned and facilitated by Vista Group in coordination with GMC Truck Division known as the “Syclone Challenge”. The trucks used in the event became known as the “Syclone Challenge Trucks”. The Syclone Challenge was part... Read more