Emission Applications

1998 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1998 Light Duty Emissions (8500 GVWR Or Less)

1.6L (98") 4-Cyl. MFI (VIN 6)

PCV, EVAP, TWC, FR, EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-TPCS, EVAP-VC, SPK-CC

2 or 3

2.2L (151") 4-Cyl. SFI

PCV, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, HO2S, O2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-VC, SPK-EST

2 or 3

3.4L (208") V6 SFI

PCV, EVAP, TWC+OC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-VC, SPK-EST, SPK-ESC

2 or 3

4.3L (262") V6 CSI

PCV, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁶⁾ ⁽⁷⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-VC, SPK-ESC, SPK-EST

2 or 3

5.0L (305") V8 CSI

PCV, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁸⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-VC, SPK-EST, SPK-ESC

2 or 3

5.7L (350") V8 CSI

PCV, EVAP, ⁽⁵⁾ TWC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁶⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-CVCS, EVAP-VC, SPK-EST, SPK-ESC

2 or 3

7.4L (454") V8 CSI

PCV, EVAP, ⁽⁵⁾ OC, FR, ⁽⁴⁾ EGR, SPK, AP, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-VC, SPK-EST, SPK-ESC

2 or 3

1998 Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.3L (262") V6 CSI

PCV, EVAP, OC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁸⁾ ⁽⁷⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-VC, SPK-EST

2 or 3

5.7L (350") V8 CSI

PCV, EVAP, ⁽⁷⁾ OC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁶⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-VC, SPK-EST

2 or 3

7.4L (454") V8 CSI

PCV, EVAP, ⁽⁵⁾ OC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-CPCS, EVAP-VC, SPK-EST

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 - DOMESTIC TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	Linear EGR valve.

⁽⁵⁾	Equipped with 2.

⁽⁶⁾	Equipped with 4.

⁽⁷⁾	Some models equipped with 4.

⁽⁸⁾	Equipped with 3.