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Transmission Cooler Line Leaking

29372 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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· Premium Member
6,727 Posts
Degrease it and see how severe the seepage might be looking at two years of accumulation.
I cleaned mine off this spring and found very little leakage when warm outside. Instead of paying all that money for the line replacement it made way more sense to just have the transmission fluid changed to ensure its still full. Looking again this fall I see new fluid seepage and its possibly getting worse, so I may end up replacing it at some point.

As close as those lines are to the hot exhaust/turbo and as many cars do leak I wouldn't be surprised if there is a recall due to a fire risk.
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