2015 c7 drain plugs question
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2nd Gear
Joined: Aug 2023
Posts: 2
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2015 c7 drain plugs question
i recently purchased a c7 and i got the oil changed at dealership , and they say the front plug has been changed with a bigger size and wont seal up now . are they suppose be different size or the same?
anybody else have this issue?
anybody else have this issue?
Racer
Joined: Jun 1999
Posts: 407
Likes: 91
From: Chandler Arizona
The drain plugs on my 17 GS are both the same, l change my own oil and bought the car new so I am sure. Someone may have replaced one in the past, they seal with a o-ring gasket , have the replaced it with the correct one and does it still leak?
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2nd Gear
Joined: Aug 2023
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they ordered the original and it won't thread in , someone before me that had car must have screwed it up. so now it leaks since they pulled it out and can't find a seal yet - they say .
its dry sump with 2 plugs . and the one is now larger bolt/plug.
its dry sump with 2 plugs . and the one is now larger bolt/plug.
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Safety Car
Joined: Jul 2019
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From: nashville TN
replace the oil pan which will be $$ or tap the existing hole for a new plug which obviously will be bigger than what you have now but will seal. about only 2 choices you have
Team Owner
Joined: Jul 2004
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From: Hartford WI
PO screwed up the car? Nooooo. Say it ain't so.
Drifting
Joined: Jun 2013
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From: Maryland, USA
if they knew the one with issue was "bigger" than stock should of guessed issues with thread for sure.
guess be glad the pan isnt cracked in that area and just needs proper tapping/thread.
i would of stopped let owner know, then redrained oil, tried the other regular plug in that hole and said houston we have a problem.
yeah i would have them tap the pan with the next size up plug with correct thread and go from there.
going to be wasting some oil but certainly cant be leaking and need to fix it correctly.
best of luck.
guess be glad the pan isnt cracked in that area and just needs proper tapping/thread.
i would of stopped let owner know, then redrained oil, tried the other regular plug in that hole and said houston we have a problem.
yeah i would have them tap the pan with the next size up plug with correct thread and go from there.
going to be wasting some oil but certainly cant be leaking and need to fix it correctly.
best of luck.
