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Home >> Hyundai >> 1991 >> Excel GS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis & Overhaul - Km175, Km176 & Km177 >> Trouble Shooting >> Symptom Diagnosis >> No 3rd-4th Upshift

No 3rd-4th Upshift

Defective end clutch or piston. Defective overdrive switch. Inside diameter of front clutch retainer worn. PCSV defective or wire disconnected. Defective VSS. Defective TCU.