Overheating issues
Thread Starter
Pro
Joined: Jun 2006
Posts: 579
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From: Mckinney Tx
Overheating issues
Hey guys, I just purchased a 2014 1lt corvette stingray 3 weeks ago and have overheating issues, 3 days after I initially purchasing the car it overheated at idle in my garage and blew the rad. Cap off and coolant spilled into my garage and driveway. Dealership blames faulty thermostat and was fixed. 9 days later it blew off again at car wash and was sent to chevy to diagnos, was fine and car returned after rad. Reservoir replaced 10 days later. Now less than a week later car is still over heating, I think being under factory warranty the car is eligible for a dealer buy back. Any input would be appreciated.
Other than this issue car is absolutely immaculate with 19k on the clock.
Thank you.
Other than this issue car is absolutely immaculate with 19k on the clock.
Thank you.
Last edited by Sloo_Dc2; Apr 10, 2017 at 03:36 AM.
Melting Slicks
Joined: Sep 2009
Posts: 2,028
Likes: 357
What was your coolant temp reading? Was the radiator fan running?
There have been a few members that have had a warped coolant reservoir cap receptacle. Meaning that when the reservoir cap is installed, the reservoir is warped and the cap does not create a proper seal. This allows air to escape and the coolant system does not pressurize when the coolant gets hot. The coolant system needs to retain pressure to raise the boiling point of the coolant. Without pressure the coolant will boil at 212 degrees F. With pressure the boiling point will be about 260 degrees F.
If this is the issue, the dealership should have caught it during a pressure test of the system. But, could be easily be missed.
HTH
There have been a few members that have had a warped coolant reservoir cap receptacle. Meaning that when the reservoir cap is installed, the reservoir is warped and the cap does not create a proper seal. This allows air to escape and the coolant system does not pressurize when the coolant gets hot. The coolant system needs to retain pressure to raise the boiling point of the coolant. Without pressure the coolant will boil at 212 degrees F. With pressure the boiling point will be about 260 degrees F.
If this is the issue, the dealership should have caught it during a pressure test of the system. But, could be easily be missed.
HTH
Le Mans Master
Joined: Oct 2004
Posts: 6,813
Likes: 287
From: Toronto Ontario Canada
I would think that after 3 times of trying to fix the problem the dealer is not very good at diagnosing the problem. Pick another dealer and let them try to fix it. You have been more than patient. Don't let this experience affect your appreciation for the car.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
The only good news I have is that there must be something specifically wrong with this car - it's not an issue that's borderline or crops up on a lot of cars. Once a good tech finds the cause and fixes it, it'll be gone.
Now the hard part... finding a good GM tech that can diagnose and fix it. They're out there, though!
Now the hard part... finding a good GM tech that can diagnose and fix it. They're out there, though!
Le Mans Master
Joined: Jun 2001
Posts: 7,331
Likes: 518
From: Admit Nothing, Deny Everything, Make Counter Accusations.
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Racer
Joined: Oct 2015
Posts: 434
Likes: 121
From: Allen Tx
Let them look at it and don't pick it back up - they are in possession of it......then start the process of buy back - you will have slightly better leverage if they already have the car and you have no intention of picking it up - now that sounds good but i don't know your situation - if you need a car to drive then thats prob not acceptable - as i imagine it is a long process. I'm talking myself out of this idea now lol - could still be making payments while it sits there etc...I see your in Mckinney - What dealership did you take it to? I had a nightmare at eldorado - 500 mile oil change guy says i need new tires - he never saw cup2 tires before - then they put 60 miles on it joy riding - i escalated it to gm but got nowhere - try stone briar - i have had better luck there. You can speak to the tech etc....not some service advisor.
Thread Starter
Pro
Joined: Jun 2006
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From: Mckinney Tx
Let them look at it and don't pick it back up - they are in possession of it......then start the process of buy back - you will have slightly better leverage if they already have the car and you have no intention of picking it up - now that sounds good but i don't know your situation - if you need a car to drive then thats prob not acceptable - as i imagine it is a long process. I'm talking myself out of this idea now lol - could still be making payments while it sits there etc...I see your in Mckinney - What dealership did you take it to? I had a nightmare at eldorado - 500 mile oil change guy says i need new tires - he never saw cup2 tires before - then they put 60 miles on it joy riding - i escalated it to gm but got nowhere - try stone briar - i have had better luck there. You can speak to the tech etc....not some service advisor.
Last edited by Sloo_Dc2; Apr 10, 2017 at 04:46 PM.
Melting Slicks
Joined: Apr 2015
Posts: 2,353
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Advanced
Joined: Mar 2014
Posts: 78
Likes: 4
Regardless, your issue DEF needs to get resolved. If I was you I would make the drive out to Grapevine to Classic Chevrolet. They have specific C7 Corvette techs that diagnose your car. Not a tech that sees a C7 and flips **** over it since he has been working on Malibus all day long
Thread Starter
Pro
Joined: Jun 2006
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From: Mckinney Tx
Thank you for the info, yea my attorney says I have a strong case but what would you recommend as far being able to show that the integrity of the motor has been compromised due to the continual overheating?
Racer
Joined: Apr 2015
Posts: 430
Likes: 32
Let's start with the first step...
Do you have data logged showing the exact temperatures when the overheating occurred? How did you acquire this information and how reliable is the data? What are your credentials to perform such testing?
Now, one might simply state that they observed the temperature gauge in the vehicle. That's fine, although not quite scientific.
I'm not bashing you I'm just looking at how the dealer will approach this discussion.
Burning Brakes
Joined: Nov 2016
Posts: 774
Likes: 91
There is nothing technical about it. If the thermostat works the car at idle would have no problems. Maybe someone hear knows better than I do but they still have thermostats right? If so that motor has a head gasket leak or warped head...it's a goner.
Thread Starter
Pro
Joined: Jun 2006
Posts: 579
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From: Mckinney Tx
Ok I see, well the techs at GM should know once they hook the computer up to the ECU and that will provide them with the criteria they need or at least show them, hey! This car has overheated several times and then they go from there.
Last edited by Sloo_Dc2; Apr 10, 2017 at 07:50 PM.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
It could be a stuck thermostat, defective electric fan, faulty water pump, etc. Have a Chevrolet dealership run the VIN for service records to see what has been done to it.
If it is literally blowing the cap off then you may have a blown head gasket or other issue causing it to pressurize the cooling system and the dealer has a test kit that will indicate whether there are combustion gas byproducts in the coolant.
If it is literally blowing the cap off then you may have a blown head gasket or other issue causing it to pressurize the cooling system and the dealer has a test kit that will indicate whether there are combustion gas byproducts in the coolant.
Last edited by NSC5; Apr 10, 2017 at 08:44 PM.
