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Home >> GMC Truck >> 1984 >> G 2500 3/4 Ton Van V8-379 6.2L DSL VIN C FI >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 3L80/3L80HD (400/475) Automatic Transmission >> Oil Pressure High or Low

Oil Pressure High or Low

1. Vacuum line or fittings clogged or leaking.

2. Vacuum modulator.

3. Modulator valve.

4. Pressure regulator.

5. Oil pump.

6. Governor.

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