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Home >> Pontiac >> 1988 >> 6000 V6-191 3.1L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 440-T4, (4T60/4T60-E) Automatic Transaxle >> Harsh or Soft 3-4 Shift

Harsh or Soft 3-4 Shift

1. Incorrect oil pressure.

2. Defective accumulator cover or piston seal.

3. Improperly tightened accumulator cover bolts.

4. Mislocated No. 1 check ball.

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