tranny leak

[almo]

My Silverado 64000 m 04/5 3500 crew 4x4 LB D/A. I v'e owned it 1 year and bought the 3 year, 36k warrenty. It leaks ATF at the check hole. I took it to the dealer. It took 5 1/2 weeks to get the special holder for the tranny to replace some gasket. When I got the truck back it still leaked at the check hole, but now the ATF cooler return lines leak.
Anybody know what it takes to stop the leak at the check hole. Are the cooler lines attached with a O ring.

[Mark Rinker]

Tranny problems are pretty rare around here. I'd suggest an Allison repair center for your questions, and see if they can do the warranty work. If not, try a different dealership - one that has the proper tools on hand!