| Yr | Cyl | Desc | UNIV | DF | PK | | 2000 | 6 | All models with 4.3L engine, except California | 2517 | 9132 | N/A |
| 1996-1999 | 6 | All models with 4.3L engine, except California | 2517 | 9075 | N/A |
| 1994-1995 | 6 | All models with 4.3L AWD | 2907 | 9028 | N/A |
| 1994-1995 | 6 | All AWD models with 4.3L engine | 2907 | N/A | N/A |
| 1994-1995 | 6 | All models with 4.3L engine, except 4WD | 2907 | 9594 | N/A |
| 1993 | 6 | All models with 4.3L engine | 2907 | 9184 | N/A |
| 1992 | 6 | All models with 4.3L W engine | 2907 | 9184 | PK-20 |
| 1992 | 6 | All models with 4.3L Z engine and 2 1/2" pipe | 2906 | 9529 | PK-22 |
| 1988-1990 | 4 | All models with 2.5L engine | 6905 | N/A | PK-17 |
| 1986-1991 | 6 | All models with 4.3L engine | 2906 | 9002 | PK-19 |
| 1985 | 6 | All models with 4.3L engine | 6906 | 4001 | PK-19 |
| 1985-1987 | 4 | All models with 2.5L engine | 6905 | N/A | PK-18 |