International SyTy Registry

GMC Syclone, Typhoon, & Sonoma GT History and Data

During the GMC Syclone and Typhoon production, there were a number of trucks that were later modified by GM/PAS or an outside third party....

During the GMC Syclone and Typhoon production, there were a number of trucks that were later modified by GM/PAS or an outside third party. These trucks are considered to be conversions as they weren’t purpose built for conversion, rather randomly selected from the standard production run.  Both the Syclone and Typhoon had variations done, with the Syclone having more known conversion variants.

The most notable of these conversions is the Marlboro Syclone due to its background story with being part of the Phillip Morris / Marlboro sweepstakes to win 1 of 10 trucks.  Not all of the conversions where over the top visual modifications such as the Marlboro or PPG Syclones. The Saudi Syclone and Typhoon were modified in order to meet the limited availability of premium fuels in the middle east along with a swapped gauge cluster that read in metric instead of standard measurements.

SYCLONE
TYPHOON
  • Saudi Typhoon Info
  • 1992 Indy Typhoon Info
  • Geiger Typhoon Info