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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis - 4L80-E >> Electronic Self-Diagnostics >> Notes

Electronic Self-Diagnostics: Notes

NOTE: To test electronic control of transmission solenoids without using self-diagnostics, go to COMPONENT TEST CHARTS (NO CODES) under ELECTRONIC TESTING . After repairs are made, trouble codes should be erased from computer memory. See CLEARING TROUBLE CODES .