Operation CHARM: Car repair manuals for everyone.

Slips 1-2 Shift

1. Incorrect oil level.

2. Vacuum modulator valve sticking.

3. Vacuum modulator defective.

4. Pump pressure regulator valve detective.

5. Porosity between channels in case.

6. Control valve assembly.

7. Pump to case gasket improperly positioned.

8. Intermediate clutch plug in case missing or leaking excessively.

9. Intermediate clutch piston seal missing or damaged.

10. Intermediate clutch plates burned.

11. Front or rear accumulator oil ring damaged.

12. Leak in center support feed circuit excessive leak between center support tower and bushing, blocked center support orifice bleed plug hole, center support bolt not properly seated.

13. Raised ridge around case center support bolt not allowing control valve assembly to seat properly.

14. Low oil pressure.