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2006
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Avalanche 2500
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Repair and Diagnosis
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Engine Performance
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Engine Control System - 8.1L - DTC P0030 To DTC P0171
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DTC P0068
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Conditions for Setting the DTC
Conditions for Setting the DTC
The PCM detects that the difference between the actual MAF and the speed density calculated air flow is greater than expected.
All of the above conditions met for less than 1 second.