Original post by: Rick Ed ,
Wipers going down before up... I had the same problem after replacing a wiper motor on an 01 Cavalier. I needed to readjust the linkage arm on the motor shaft. I made sure the wiper motor was in its parked position. Then took the nut off the motor shaft and dislodged the short linkage arm from the shaft, then moved the linkage to where the wipers were on the upswing, then reinstalled linkage arm to the shaft and retightend the nut. The linkage was out of sync with the motor. Works great.