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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (ENGINE CONTROLS - 4.3L - DTCs P0140-P0506) >> DTC P0300-P0306 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The PCM is detecting a crankshaft rotation speed variation indicating a misfire sufficient to cause emission levels to exceed mandated standards.