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Home >> Pontiac >> 1991 >> Grand AM L4-151 2.5L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> No Drive In All Ranges

No Drive In All Ranges

1. Oil pressure:

a. Pressure regulator valve sticking in bushing.

b. Worn pump seals.

c. Oil pump shaft broken.

2. Differential damaged or broken.

3. Drive link broken or interference between drive link and sprocket.

4. Manual valve retainer clip missing.

5. Input shaft loose or broken away from forward clutch drum.

6. Reaction carrier broken at Low roller clutch cam.