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Transmission Cooler Line Leaking

29409 Views 20 Replies 12 Participants Last post by  jsusanka
Had my car on the lift to install my snow tires and noticed a small leak that appeared to be coming from the transaxle case.

Dropped it off at the Chevy dealer up the road, they called back with the diagnosis in the title.

Over $500 to repair, not covered under powertrain. :angry:

I declined for now since I don't even notice anything on the ground. I'm even more mad I have to pay the $65 for diagnosis now that it was not covered.

Anyone else had this issue with a diesel?

I'm at about 65k miles
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Very few vehicles made don't seep slightly from the cooler line hose to metal junction......those of us in the North (you, me) will see it more often in cold temperatures.

The aluminum tubes shrink slightly at the barb joint and because it is cold, trans pressure is elevated.....a cold seep is the result.

You can replace the lines, but the seep will return in about two seasons.

Degrease it and see how severe the seepage might be looking at two years of accumulation.

eggsactly, those aluminum connectors are pita, just cut em off and use a repair kit
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