Hi my 1995 jeep grand Cherokee slipped out of drive on way home other day. Turned the motor off and on and stays in 3rd no overdrive. Reverse works but no 1 or 2nd gear. The light stays on the OD button. No check engine light on and no codes coming from it either by key test. Oil was dark so changed oil and filter didnt do anything. Any help would be great. Love my jeep