Geoff Brabham (GTP)
Scott Schubot (Lights)
Pete Halsmer (GTO)
Bob Leitzinger (GTU)
Mistrz producentów
Nissan (GTP)
Buick (Lights)
Mercury (GTO)
Mazda (GTU)
| Runda | Tor | Data | Klasa | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|---|
| 1 | Daytona Daytona 24 godziny | 1989.02.04 - 02.05 | GTP | Porsche 962 | Miller-BF Goodrich | |
| 2 | Miami | 1989.03.05 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 3 | Sebring Sebring 12 godzin | 1989.03.18 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 4 | Road Atlanta | 1989.04.02 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 5 | West Palm Beach | 1989.04.23 | GTP | Porsche 962 | Busby Racing | |
| 6 | Lime Rock Park | 1989.05.29 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 7 | Mid-Ohio | 1989.06.04 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 8 | Watkins Glen | 1989.07.02 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 9 | Road America | 1989.07.16 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 10 | Portland | 1989.07.30 | GTP | Jaguar XJR-10 |  Castrol Jaguar | |
| 11 | Heartland Park | 1989.08.13 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 12 | San Antonio | 1989.09.03 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 13 | Sears Point | 1989.09.10 | GTP | Nissan GTP ZX-T | Electramotive Eng. | |
| 14 | Florida | 1989.10.01 | GTP | Jaguar XJR-9 | Castrol Jaguar | |
| 15 | Del Mar | 1989.10.22 | GTP | Jaguar XJR-10 | Castrol Jaguar |
