i took my 05 in thinking i had a bad tranny pump seal and it ended up being my torque converter is toast. i am trying to figure out what caused it. i never really drive with edge over 3-3. i have done about 3 level 5 runs. the truck does plow snow and thats whats the dealership thinks cause it. one time when towing my tranny temp got almost up to the red but the tranny fluid did not look burnt. i have replaced the outside filter every 5,000 miles and the truck has about 24,000. did i just have a bad converter or does anyone else have any ideas? could the edge on 3 destroyed it or maybe the one time it got hot and just took a while to go. it did not start leaking right after the last time i plowed snow. i find it hard to believe that could of caused it do to the fact the truck does not work very hard plowing snow and we have several other gm trucks that have never had that problem. any input would be appreciated?