| 1.6L (98") 4-Cyl. 2-Bbl. | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, (3) CEC, EFE BP/EGR-TVS, (3) SPK-TCS, AIS-AMV, DCLV, FISR | 2 or 3 |
| 2.0L (122") 4-Cyl. TBI | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC EVAP-VC, BP/EGR-CS, SPK-EST | 2 or 3 |
| 2.5L (151") 4-Cyl. TBI | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC EVAP-VC, SPK-EST | 2 or 3 |
| 2.8L (173") V6 MFI | PCV, EVAP, TWC, FR, BP/EGR, SPK, (4) AIS, O2S, CEC EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST | 2 or 3 |
| 2.8L (173") V6 2-Bbl. | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE EVAP-VC, EVAP-CPCS, BP/EGR-CS, SPK-EST, AIS-AMV, EFE-TVS | 2 or 3 |
| 4.3L (262") V6 TBI | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC EVAP-VC, BP/EGR-CS, SPK-EST, SPK-ESC, AIS-AMV | 2 or 3 |
| 5.0L (305") V8 FI | PCV, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, SPK-ESC, AIS-AMV | 2 or 3 |
| 5.0L (305") V8 4-Bbl. | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE EVAP-VC, BP/EGR-CS, SPK-EST, SPK-ESC, AIS-AMV, EFE-TVS, TK | 2 or 3 |
| 5.7L (350") V8 4-Bbl. | PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE EVAP-VC, BP/EGR-CS, SPK-EST, AIS-AMV, EFE-TVS, TK | 2 or 3 |
| (1) Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type. (2) See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number. (3) Minimum function. (4) Some applications. |