so i thought id go out take the t-tops off and waste some gas today, i drive around for about an hour messin with a few ricers and then my trans (4l60e) starts shiftin real hard and when in over drive it keeps shifting between 3th and 4th and wont stay in a gear. then its sits for about a half hour i go back out and its fine. i think it was just overheating. but does anyone have any other ideas??

 

no codes and its a 94 lt1