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Emission Applications

1989 Domestic Trucks & Vans

Engine & Fuel System (1) Emission Control Systems & Devices (2) EGR Test No.
Light Duty Emissions (8500 GVWR Or Less) 
2.5L (151") 4-Cyl. TBI PCV, ACL, EVAP, TWC, FR, EGR, O2S, CEC 
EVAP-VC, EGR-CS
...
2.8L (170") V6 TBI PCV, ACL, EVAP, TWC, FR,  (4)  EGR, AIS, O2S, CEC 
EVAP-VC, EGR-CS
1
4.3L (262") V6 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK,  (5) (6)  AIS, O2S, CEC 
EVAP-VC, EGR-CS, SPK-ESC
1
5.0L (305") V8 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK,  (7)  AIS, O2S, CEC 
EVAP-VC, EGR-CS, SPK-ESC
1
5.7L (350") V8 TBI PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK,  (8)  AIS, O2S, CEC 
EVAP-VC, BP/EGR-CS, SPK-EST
1
7.4L (454") V8 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC 
EVAP-VC, EGR-CS, SPK-ESC
1
Heavy Duty Emissions (8501 GVWR Or More)  (3) 
4.3L (262") V6 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC 
EVAP-VC, EGR-CS, SPK-ESC
1
4.8L (292") 6-Cyl. 2-Bbl. PCV, ACL, EVAP,  (9)  EGR, AIS, EFE 
EVAP-VC, AIS-DV, DCLV
1
5.7L (350") V8 4-Bbl. PCV, ACL, EVAP,  (9)  EGR,  (8)  SPK, AIS, EFE 
EVAP-VC, SPK-ESC
1
5.7L (350") V8 TBI PCV, ACL, EVAP, OC,  (8)  TWC, FR, EGR, SPK,  (8)  AIS 
EVAP-VC, EGR-CS, SPK-ESC
1
6.0L (360") V8 TBI PCV, ACL, EVAP,  (8)  OC,  (8)  FR, EGR, SPK 
EVAP-VC, EGR-CS, SPK-ESC
1
7.4L (454") V8 4-Bbl. PCV, ACL, EVAP,  (9)  EGR, AIS, EFE 
EVAP-VC, AIS-DV
1
7.4L (454") V8 TBI PCV, ACL, EVAP,  (10)  TWC, FR, EGR, SPK, AIS, O2S 
EVAP-VC, EGR-CS, SPK-CC
1
(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 - 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) Except Federal & high altitude A/T models, & "S" & "T" Series.
(5) Electronically controlled.
(6) Except "S" & "T" Series.
(7) M/T only.
(8) Some models.
(9) Ported type.
(10) California only.