I have an 03 chev silverado hd crew cab 155,000klms on it completely stock. Yesterday i was towing my brothers car trailer and race car home from the drag strip and got home trans fluid running out from under the truck. I looked under the truck and it looked like it was coming from on top of the tranny running down over the drivers side.the car and trailer only weighs about 5000 pounds. I didn't have tow/haul on and the gauge did reach about half way. Any ideas would be appreciated? thanks mike

I believe your Alli is overfull.