Emission Applications

1987 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
EVAP-VC, SPK-ESC

2.8L (173") V6 TBI

PCV, ACL, EVAP, TWC, FR, ⁽⁴⁾ BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, BP/EGR-BPT, BP/EGR-CS, SPK-ESC, AIS-AMV

4.3L (262") V6 TBI

PCV, ACL, EVAP, TWC, FR, ⁽⁴⁾ BP/EGR, SPK, ⁽⁵⁾ AIS, O2S, CEC
EVAP-VC, BP/EGR-BPT, BP/EGR-CS, SPK-ESC, ⁽⁵⁾ AIS-AMV

5.0L (305") V8 TBI

PCV, ACL, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁵⁾ AIS, O2S, CEC
EVAP-VC, EGR-CS, SPK-ESC, AIS-DV

5.7L (350") V8 TBI

PCV, ACL, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, ⁽⁵⁾ AIS, O2S, CEC
EVAP-VC, EGR-CS, SPK-ESC, AIS-DV

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

4.8L (292") 6-Cyl. Carb.

PCV, ACL, EVAP, EGR, ⁽⁶⁾ SPK, AIS, EFE
EVAP-VC, SPK-EST, AIS-DV, DCLV

5.7L (350") V8 Carb.

PCV, ACL, EVAP, EGR, ⁽⁶⁾ SPK, AIS
EVAP-VC, SPK-EST, AIS-DV

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁷⁾ EVAP, EGR, AIS

7.4L (454") V8 Carb.

PCV, ACL, EVAP, EGR, ⁽⁶⁾ SPK, AIS, EFE
EVAP-VC, SPK-EST, AIS-DV

7.4L (454") V8 TBI

PCV, ACL, ⁽⁷⁾ EVAP, TWC, FR, EGR, AIS, O2S, CEC

⁽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⁾	Calif. is electronically controlled.

⁽⁵⁾	Except Fed. & high altitude A/T models.

⁽⁶⁾	Some models.

⁽⁷⁾	Vapor canister type.