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| GP | Local | Data | Etapa | Extênsão | Voltas |
| Detroit Grand Prix | Detroit | 18 de Junho de 1989 | 5 | 4.054 Km | 200 |
Resultado final:
| Piloto | Chassi/Motor | Equipe | Tempo/diferença | grid | nº | |
| 1 Emerson Fittipaldi |
Penske PC-18 Chevrolet A | Patrick | 2:02:11.349 | 3 | 20 | |
| 2 Scott Pruett | Lola T8900 Judd | Truesports | a 29.544 | 5 | 3 | |
| 3 Mario Andretti |
Lola T8900 Chevrolet A | Newman-Haas | 62 Voltas | 4 | 5 | |
| 4 Teo Fabi |
March 89P Porsche | Porsche | 62 Voltas | 8 | 8 | |
| 5 Rick Mears |
Penske PC-18 Chevrolet A | Penske | a 1 Volta | 9 | 4 | |
| 6 Arie Luyendyk |
Lola T8900 Cosworth | Dick Simon | a 1 Volta | 10 | 7 | |
| 7 Dominic Dobson | Lola T8900 Cosworth | Bayside | a 1 Volta | 25 | 86 | |
| 8 Roberto Guerrero |
March 89CE Alfa Romeo | Morales | a 1 Volta | 22 | 21 | |
| 9 Didier Theys |
Lola T8900 Judd | Hemelgarn | a 1 Volta | 15 | 91 | |
| 10 Pancho Carter |
Lola T8900 Cosworth | Machinists Union | a 2 Voltas | 23 | 29 | |
| 11 John Jones |
Lola T8900 Cosworth | Protofab | a 2 Voltas | 21 | 65 | |
| 12 Guido Daccò |
Lola T8800 Cosworth | Dale Coyne | a 4 Voltas | 26 | 19 | |
| 13 Michael Andretti |
Lola T8900 Chevrolet A | Newman-Haas | a 7 Voltas - Acidente | 1 | 6 | |
| 14 Steve Saleen | March 88C Cosworth | Saleen | a 11 Voltas - Acidente | 20 | 59 | |
| 15 Bernard Jourdain |
Lola T8900 Cosworth | Andale | a 12 Voltas - Acidente | 19 | 69 | |
| 16 Randy Lewis |
Lola T8900 Cosworth | Dick Simon | a 12 Voltas | 28 | 28 | |
| 17 Kevin Cogan |
March 88C Cosworth | Machinists Union | a 25 Voltas - Elétrico | 13 | 11 | |
| 18 Bobby Rahal |
Lola T8900 Cosworth | Kraco | a 34 Voltas | 6 | 18 | |
| 19 John Paul Jr. | Lola T8700 Buick | Mann | a 35 Voltas - Motor | 18 | 96 | |
| 20 Fabrizio Barbazza |
Penske PC-17 Cosworth | Arciero | a 35 Voltas - Motor | 16 | 12 | |
| 21 Al Unser Jr. | Lola T8900 Chevrolet A | Galles | a 36 Voltas - semi-eixo | 2 | 2 | |
| 22 James Weaver |
Lola T8800 Cosworth | Protofab | a 42 Voltas - Incêndio | 14 | 15 | |
| 23 Tom Sneva |
Lola T8800 Buick | Vince Granatelli | a 44 Voltas - Acidente | 17 | 9 | |
| 24 Danny Sullivan |
Penske PC-18 Chevrolet A | Penske | a 46 Voltas - Retirou | 7 | 1 | |
| 25 Derek Daly |
Lola T8900 Judd | Raynor | a 48 Voltas - Elétrico | 11 | 10 | |
| 26 A.J. Foyt |
Lola T8900 Cosworth | Foyt | a 52 Voltas - superaquecimento | 27 | 14 | |
| 27 Tero Palmroth |
Lola T8800 Judd |
Hemelgarn | a 53 Voltas - Elétrico | 24 | 71 | |
| 28 Raul Boesel | Lola T8900 Judd | Shierson | a 58 Voltas - Acidente | 12 | 30 | |
| Ludwig Heimrath, Jr. | Lola T8800 Judd | Hemelgarn | 71 | |||
| Scott Brayton | Lola T8900 Buick | Dick Simon | 22 | |||
| Jean-Pierre Frey | Lola T8800 Cosworth | Euromotorsport | 50 | |||
| Dennis Vitolo | Lola T8700 Cosworth | Bettenhausen | 16 | |||
| Tero Palmroth | Lola T8800 Cosworth | Gohr | 56 |
Pilotos que lideraram a corrida:
Michael Andretti 52
Scott Pruett 4
Emerson Fittipaldi 4
Mario Andretti 2
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