Emission Applications

1997 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.4L (151") 4-Cyl. SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, O2S, CEC, MIL
EVAP-VC, ⁽³⁾ EVAP-CPCS, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

3.1L (191") V6 SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-VC, ⁽³⁾ EVAP-CPCS, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

3.8L (231") V6 SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, ⁽⁵⁾ HO2S, CEC, MIL
EVAP-VC, ⁽³⁾ EVAP-CPCS, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

⁽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 - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	ECM/PCM controlled.

⁽⁴⁾	Linear EGR valve.

⁽⁵⁾	Equipped with 2.