blinking check transmission

:banghead: Hello mottos, I have a 93 rodeo 3.2 and all of the sudden the check transmition started blinkin non stop and the transmition started going in blank, any help would be apreciated.

today reset the codes throughout the first pin and third from the port of computer com, so after ereasded once it came back again and did not get away. The dam thing did not show any code on the external computer but there is flashing from check transmission. At the first time of reset codes ran well for about 20 min then I stop, so when I started again the code do not erease by doing the procedure mentioned before three times. Thank for any suggestion

Check your range sensor. Common issue with the 4L30E.
G/luck
Joel