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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Engine Control System Self-Diagnostics - 3.4L) >> Diagnostic Tests >> DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683: Control Module Read Only Memory >> Circuit Description

Circuit Description

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This diagnostic test applies to internal microprocessor integrity conditions within the control module. This diagnostic test also addresses if the control module is not programmed.

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