| Yr | Cyl | Desc | UNIV | DF | PK | | 1998-1999 | 6 | All models with 4.3L engine, except California | 2516 | N/A | N/A |
| 1996-1997 | 6 | All ZR2 models with 4.3L engine and 21-3/4" converter, except California | 2517 | 9881 | N/A |
| 1996-1997 | 6 | All models with 4.3L, Vortec engine and 25 1/4" converter, except California | 2516 | 9710 | N/A |
| 1996-1999 | 4 | All 2WD models with 2.2L engine, except California | 2506 | 4819 | N/A |
| 1995 | 6 | All 2WD models with 4.3L engine, except California | 2516 | 4628 | N/A |
| 1995 | 6 | All 4WD models with 4.3L engine and extended cab, except California | 2516 | 9708 | N/A |
| 1994-1995 | 4 | All models with 2.2L engine | 6905 | 4623 | N/A |
| 1988-1993 | 6 | All models with 2.8L engine | 6906 | 4088 | PK-26 |
| 1988-1994 | 6 | All models with 4.3L engine | 6906 | 4088 | PK-26 |
| 1985-1993 | 4 | All models with 2.5L engine | 6905 | 4019 | PK-23 |
| 1982-1987 | 6 | All models with 2.8L engine | 6905 | 4019 | PK-23 |
| 1982-1984 | 4 | All models with 1.9L or 2.0L engine | 6905 | 4019 | PK-23 |