2021 Chevrolet Silverado 1500 equipped with 6.2L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 4.3L V6 Gas OHV, 3.0L L6 Diesel DOHC Turbo, 2.7L L4 Gas DOHC Turbo
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EVAP EMIS CNSTR PURGE VAC DIAGN AT TANK AT FUEL TANK
2021 Chevrolet Silverado 1500 equipped with 6.2L V8 Gas OHV, 5.3L V8 Gas OHV, 5.3L V8 Flex OHV, 4.3L V6 Gas OHV, 3.0L L6 Diesel DOHC Turbo, 2.7L L4 Gas DOHC Turbo
EVAP EMIS CNSTR PURGE VAC DIAGN AT TANK AT FUEL TANK