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Chevrolet
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2002
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Blazer 4D Utility, 4WD, Part Time
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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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 (Astro & Safari)
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Test Description
Test Description
The number below refers to the step number in the diagnostic procedure.
2
A DTC P0602 indicates the PCM is not programmed.