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GMC
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1996
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C3500 HD 6.5 F, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes - Gasoline
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Diagnostic Trouble Code Tests
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DTC P1508 - Idle Air Control System Low Rpm
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Notes
DTC P1508 - Idle Air Control System Low Rpm: Notes
NOTE:
For circuit reference, see
Figure
, DTC P0506 schematic.