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Home >> GMC >> 1990 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/O Codes >> Engine Dieseling/Run-On >> Symptom Definition

Symptom Definition

Engine continues to run after ignition is turned off but runs very rough. If engine runs smoothly, check ignition switch.

Possible Cause & Correction Check the following: