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Emission Applications

1988 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,  (4)  EVAP, TWC, FR, BP/EGR, O2S, CEC  1
2.8L (170") V6 TBI PCV, ACL, EVAP, TWC, FR,  (6)  EGR, AIS, O2S, CEC 
EVAP-VC, EGR-CS, AIS-AMV
1
4.3L (262") V6 TBI PCV, ACL, EVAP, TWC, FR,  (7)  BP/EGR, SPK,  (5) (7)  AIS, O2S, CEC 
EVAP-VC, (7) BP/EGR-BPT, (7) BP/EGR-CS, (5)(7) AIS-AMV
1
5.0L (305") V8 TBI PCV, EVAP, TWC, FR, BP/EGR, SPK,  (5)  AIS, O2S, CEC, MIL 
EVAP-VC, BP/EGR-CS, SPK-ESC, AIS-DV
1
5.7L (350") V8 TBI PCV, EVAP, TWC, FR, BP/EGR, SPK,  (5)  AIS, O2S, CEC, MIL 
EVAP-VC, BP/EGR-CS, AIS-DV
1
Heavy Duty Emissions (8501 GVWR Or More)  (3) 
4.8L (292") 6-Cyl. Carb. PCV, ACL, EVAP,  (6)  EGR, AIS, EFE 
EVAP-VC,, AIS-DV, DCLV
1
5.7L (350") V8 Carb. PCV, ACL, EVAP,  (6)  EGR,  (8)  SPK, AIS 
EVAP-VC, SPK-ESC, AIS-DV
1
6.0L (366") & 7.0L (427") V8 Carb. PCV,  (4)  EVAP, EGR, AIS  1
7.4L (454") V8 Carb. PCV, ACL, EVAP,  (6)  EGR, AIS, EFE 
EVAP-VC, AIS-DV
1
7.4L (454") V8 TBI PCV, TAC, EVAP, TWC, FR, EGR, AP, O2S, CEC, MIL 
EVAP-VC, AP-DV
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) Vapor canister type.
(5) Except Fed. & high altitude A/T models.
(6) Ported type.
(7) Except "S" & "T" Series.
(8) Some models.