OK here is my delima, found TPS code in A/T computer but not in the Engine computer. Both TPS voltages are stuck high and not able to be adjusted. Can adjust TPS with voltmeter but ECM and TCM do not see the change... I have already replaced the TPS and when I did that the voltage was picked up by ECM and TCM computers. Making this problem intermittant. This only happens when it is raining outside or if i go through an automatic car wash. If its dry and hot there is no problem. This malfunction causes my tranny to shift hard and not know when to shift. Any ideas?