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GMC
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2006
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Sierra 1500 HD, RWD
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Repair and Diagnosis
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External Pages
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Different variant/trim
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Section 31 (ENGINE CONTROLS - 6.6L - DIAGNOSIS (DTCs P0402-P2636))
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DTC P0642 or P0643
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Conditions for Running the DTC
Conditions for Running the DTC
WARNING:
This page is about a different variant/trim than selected.
The ignition is ON.
Diagnostics run continuously.