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Chevrolet
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2006
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SSR Automatic
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Engine Performance
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System
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Engine Control System - 6.0L - DTC P0449 To DTC P1682
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DTC P0689
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Conditions for Setting the DTC
Conditions for Setting the DTC
The ECM detects less than 10 volts on the ECM 2 ignition 1 voltage circuit for 5 seconds.