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Emission Applications

1990 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, SPK, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC		 1
2.8L (170") V6 TBI PCV, ACL, EVAP, TWC, FR,  (4)  EGR, SPK, AP, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC, AP-ACV		 1
3.1L (190") V6 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK, O2S, CEC, MIL 
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-CC		 1
4.3L (262") V6 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK,  (5)  AP, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC, AP-ACV		 1
5.0L (305") V8 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK,  (6)  AP, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC, AP-ACV		 1
5.7L (350") V8 TBI PCV, ACL, EVAP, TWC, FR, EGR, SPK,  (6)  AP, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC, AP-ACV		 1
7.4L (454") V8 TBI PCV, ACL, EVAP, TWC, FR, EGR, AP, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, AP-ACV		 1
Heavy Duty Emissions (8501 GVWR Or More)  (3) 
4.3L (262") V6 TBI PCV, ACL, EVAP, OC, FR, EGR, SPK, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC		 1
5.7L (350") V8 TBI PCV, ACL, EVAP, OC, FR, EGR, SPK, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, SPK-CC		 1
7.4L (454") V8 TBI PCV, ACL, EVAP, OC, FR, EGR, SPK, O2S, CEC, MIL 
EVAP-VC, EGR-SOL, 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) Ported type.
(5) Except Federal & high altitude A/T models, & "S" & "T" Series.
(6) M/T only.
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