| Yr | Cyl | Desc | UNIV | DF | PK |
|---|---|---|---|---|---|
| 1986 | 6 | All models with 4.3L engine | 6005 | 4303 | PK-90 |
| 1984-1986 | 6 | All models with 3.8L engine | 6005 | 4112 | PK-91 |
| 1983 | 6 | All models with 3.8L engine, except California | 6005 | 4112 | PK-91 |
| 1983 | 6 | All California models with 3.8L engine | 6005 | 4111 | PK-85 |