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Home >> GMC >> 1992 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - A/T >> Diagnostic Flow Charts (Cars) >> Chart C-8B, 4T60 Transaxle Shift Solenoid Functional Check - 3.8L PFI (VIN L & 1) 1992 >> Diagnostic Aids

Diagnostic Aids

If PCM, control circuitry and shift solenoids are functioning properly and transmission still does not shift correctly, problem may be hydraulic or mechanical.

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