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GMC
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2002
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Jimmy 4D Utility, 4WD, Part Time
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls Self-Diagnostics - 4.3L
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Diagnostic Tests
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DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 & P1683: Pcm Memory (Jimmy CANADIAN, SONOMA & S10 Pickup)
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Test Description
Test Description
The numbers below refer to the step numbers in the diagnostic procedures.
2
These DTCs indicate an internal PCM condition.