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Home >> GMC >> 1981 >> Forward Control 5.7L Eng VIN M, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emission Systems >> Description >> Catalytic Converter (CAT)
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Catalytic Converter (CAT)

Used on all Light Duty emissions models, this unit is connected into exhaust system so exhaust gas passes through converter. Inside converter, a chemical reaction takes place which reduces exhaust emissions. For additional information, see  CATALYTIC CONVERTER   article in this section.