On my '96 Bonneville, I have a transmission fluid leak located where the transmission cooling line connects to the radiator. I replaced the radiator about a year ago. The leak was very minor until recently. I think it is the upper cooling line that is leaking.

1.) Does anyone know if this is a flared fitting that can be cleaned or re-tooled?

2.) Any estimates on cost of new cooling lines? Can they be purchased at Autozone, or are they dealer only?

3.) I haven't followed the lines back to the transmission .... how difficult of a job is replacing the cooling lines? Anything major in the way that needs to be removed?

Thanks.

Hey, Im having the same problem. Well so my bonneville was in an accident three years ago and the radiator had a whole punched in it. so it sat that way for three years. now ive been the lucky recipient of this car. so as my luck would have it i had to replace the radiator. i did it myself it was relatively simple. so i know what your talking about on the top line what i was gonna do is maybe get some Kevlar tape or something and put that around the fitting. mine doesnt leak all that fast. it would be nice though to not have it leak at all

I'm planning on taking a closer look tomorrow. I did find a replacement at Autozone ...$21.00 for the lower and $25.00 for the upper .... so if the connection on the transmission side is an easy grab, I will probably just go for the replacement

Do you know if there is suppose to be a plastic washer or other seal between the tube and the radiator fitting? Can the fitting at the end of the cooling tube be replace? (It doesn't look possible) I don't see any parts listed on-line.