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Home >> GMC >> 2000 >> Envoy 4WD V6-4.3L VIN W >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> Decel Fuel Mode
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Decel Fuel Mode

Active/Inactive: The scan tool indicates whether the vehicle is in Decel Fuel Cutoff Mode. This mode is generally entered during long decels to prevent catalyst overheating and excessive tailpipe emissions.