Operation CHARM: Car repair manuals for everyone.

Home >> GMC Truck >> 1988 >> S15/T15 4WD Jimmy L4-151 2.5L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 3L30 (180/180C) Automatic Transmission >> High Oil Pressure

High Oil Pressure

1. Modulator vacuum line leaking.

2. Defective vacuum modulator.

3. Leak in vacuum system.

4. Defective pressure regulator valve.

pro multis · About Operation CHARM