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 | GTU | Mazda RX-7 | Al Bacon Performance | |
| 2 | Miami | 1989.03.05 | GTU | Mazda RX-7 | John Finger | |
| 3 | Sebring Sebring 12 godzin | 1989.03.18 | GTU | Pontiac Fiero | Huffaker Racing | |
| 4 | Summit Point | 1989.05.21 | GTU | Pontiac Fiero | Robinson Racing | |
| 5 | Mid-Ohio | 1989.06.04 | GTU | Mazda MX-6 GT | Team Highball | |
| 6 |  Mosport Park | 1989.06.25 | GTU | Dodge Daytona | Full Time Racing | |
| 7 | Road America | 1989.07.16 | GTU | Mazda MX-6 GT | Team Highball | |
| 8 | Portland | 1989.07.30 | GTU | Dodge Daytona | Full Time Racing | |
| 9 | Heartland Park | 1989.08.12 | GTU | Nissan 240SX | Leitzinger Racing | |
| 10 | San Antonio | 1989.09.03 | GTU | Nissan 240SX | Leitzinger Racing | |
| 11 | Sears Point | 1989.09.10 | GTU | Dodge Daytona | Full Time Racing | |
| 12 | Watkins Glen | 1989.09.24 | GTU | Mazda MX-6 | Al Bacon Performance | |
| 13 | Lime Rock Park | 1989.10.01 | GTU | Dodge Daytona | Full Time Racing | |
| 14 | Laguna Seca | 1989.10.15 | GTU | Dodge Daytona | Full Time Racing | |
| 15 | Del Mar | 1989.10.22 | GTU | Dodge Daytona | Full Time Racing |
