| 1 | Phoenix | 4/7/90 | Phoenix International Raceway | 15 | 22R |
| 2 | Long Beach | 4/22/90 | Streets of Long Beach | 11 | 13 |
| 3 | Milwaukee | 6/3/90 | The Milwaukee Mile | 1 | 2 |
| 4 | Buick Dealers 125 Km - Detroit | 6/17/90 | Streets of Detroit | 9 | 18R |
| 5 | Portland | 6/24/90 | Portland International Raceway | 8 | 9 |
| 6 | Cleveland | 7/8/90 | Burke Lakefront Airport, Cleveland | 10 | 6 |
| 7 | Meadowlands | 7/15/90 | Meadowlands Sports Complex | 9 | 4 |
| 8 | Toronto | 7/22/90 | Exhibition Place, Toronto | 5 | 11R |
| 9 | Denver | 8/26/90 | Streets of Denver | 6 | 2 |
| 10 | Vancouver | 9/2/90 | Concord Pacific Place, Vancouver | 4 | 6 |
| 11 | Mid-Ohio | 9/16/90 | Mid-Ohio Sports Car Course | 1 | 2 |
| 12 | Road America | 9/23/90 | Road America | 5 | 2 |
| 13 | Nazareth | 10/7/90 | Nazareth Speedway | 1 | 2 |
| 14 | Laguna Seca | 10/21/90 | Laguna Seca Raceway | 3 | 16R |
| 1 | Texaco System 3 Challenge/Long Beach | 4/14/91 | Streets of Long Beach | 8 | 2 |
| 2 | Phoenix | 4/21/91 | Phoenix International Raceway | 11 | 8 |
| 3 | Milwaukee | 6/2/91 | The Milwaukee Mile | 6 | 9 |
| 4 | Conoco Challenge - Detroit | 6/16/91 | Streets of Detroit | 9 | 4 |
| 5 | Portland | 6/23/91 | Portland International Raceway | 9 | 6 |
| 6 | Banquet/Morton Challenge - Cleveland | 7/7/91 | Burke Lakefront Airport, Cleveland | 2 | 5 |
| 7 | Meadowlands | 7/14/91 | Meadowlands Sports Complex | 3 | 3 |
| 8 | Toronto | 7/21/91 | Exhibition Place, Toronto | 2 | 2 |
| 9 | Conoco Challenge - Denver | 8/25/91 | Streets of Denver | 3 | 11R |
| 10 | Mid-Ohio | 9/15/91 | Mid-Ohio Sports Car Course | 1 | 14R |
| 11 | Nazareth | 10/6/91 | Nazareth Speedway | 2 | 1 |
| 12 | Laguna Seca | 10/20/91 | Laguna Seca Raceway | 1 | 17R |
| 1 | Phoenix | 4/5/92 | Phoenix International Raceway | 3 | 3 |
| 2 | Texaco System 3 Challenge/Long Beach | 4/12/92 | Streets of Long Beach | 2 | 3 |
| 3 | Buick Challenge of Detroit | 6/7/92 | The Raceway on Belle Isle Park | 6 | 2 |
| 4 | Portland | 6/21/92 | Portland International Raceway | 2 | 2 |
| 5 | Milwaukee | 6/28/92 | The Milwaukee Mile | 3 | 3 |
| 6 | Buick Challenge of New Hampshire | 7/5/92 | New Hampshire International Speedway | 2 | 3 |
| 7 | Toronto | 7/19/92 | Exhibition Place, Toronto | 5 | 2 |
| 8 | Cleveland | 8/9/92 | Burke Lakefront Airport, Cleveland | 1 | 3 |
| 9 | Vancouver | 8/30/92 | Concord Pacific Place, Vancouver | 1 | 2 |
| 10 | Mid-Ohio | 9/13/92 | Mid-Ohio Sports Car Course | 6 | 3 |
| 11 | Nazareth | 10/4/92 | Nazareth Speedway | 1 | 1 |
| 12 | Laguna Seca | 10/18/92 | Laguna Seca Raceway | 7 | 4 |