Overheating warning
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Joined: Dec 2007
Posts: 58
Likes: 9
From: Henderson NV
Back from Fisher Chevrolet. No codes; no underlying causes found. They think that maybe the thermostat got stuck. They were going to replace it, but did not have one in stock. Driving back from Yuma, I now think that it is the battery. Many weird things were happening, like the center stack rebooting and the steering wheel radio controls not working, as well as the battery gauge needle not pointing where it is supposed to be pointing.
You're right, rrsperry. I should have stopped sooner. I kept thinking that it would self-correct. Especially when the driver info message said to put the engine in idle. So after I pulled over, I did. Didn't help. Lesson learned. See my paragraph above about the battery gauge. Thanks!
You're right, rrsperry. I should have stopped sooner. I kept thinking that it would self-correct. Especially when the driver info message said to put the engine in idle. So after I pulled over, I did. Didn't help. Lesson learned. See my paragraph above about the battery gauge. Thanks!
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
A battery issue wouldn't cause fluid out of the coolant overflow line. If system voltage had dropped so far that the electric cooling fan couldn't run then the engine wouldn't have been running either. There could be a tie-in between a defective electric cooling fan motor and the overheat with the fan causing a severe intermittent current draw resulting in other electrical system glitches while not providing cooling airflow but the fan shouldn't be needed for cooling when running at a reasonable road speed.
There have been several reports of C7s with odd intermittent overheating issues and at least one was finally cured after installation of a new water pump. If your local dealer is willing to replace the thermostat I would have it done because:
1. It might be the problem
2 If it overheats again after the thermostat is replaced then one possible cause was ruled out and you are a step closer to resolution PLUS you want to get this addressed early during ownership.
Overheating situations don't self-correct permanently and the next event could be much more inconvenient.
There may be a different issue causing the electrical problem.
There have been several reports of C7s with odd intermittent overheating issues and at least one was finally cured after installation of a new water pump. If your local dealer is willing to replace the thermostat I would have it done because:
1. It might be the problem
2 If it overheats again after the thermostat is replaced then one possible cause was ruled out and you are a step closer to resolution PLUS you want to get this addressed early during ownership.
Overheating situations don't self-correct permanently and the next event could be much more inconvenient.
There may be a different issue causing the electrical problem.
Last edited by NSC5; Jan 20, 2016 at 07:02 AM.
Race Director
Joined: Jan 2005
Posts: 13,934
Likes: 4,257
From: NC
A battery issue wouldn't cause fluid out of the coolant overflow line. If system voltage had dropped so far that the electric cooling fan couldn't run then the engine wouldn't have been running either. There could be a tie-in between a defective electric cooling fan motor and the overheat with the fan causing a severe intermittent current draw resulting in other electrical system glitches while not providing cooling airflow but the fan shouldn't be needed for cooling when running at a reasonable road speed.
There have been several reports of C7s with odd intermittent overheating issues and at least one was finally cured after installation of a new water pump. If your local dealer is willing to replace the thermostat I would have it done because:
1. It might be the problem
2 If it overheats again after the thermostat is replaced then one possible cause was ruled out and you are a step closer to resolution PLUS you want to get this addressed early during ownership.
Overheating situations don't self-correct permanently and the next event could be much more inconvenient.
There may be a different issue causing the electrical problem.
There have been several reports of C7s with odd intermittent overheating issues and at least one was finally cured after installation of a new water pump. If your local dealer is willing to replace the thermostat I would have it done because:
1. It might be the problem
2 If it overheats again after the thermostat is replaced then one possible cause was ruled out and you are a step closer to resolution PLUS you want to get this addressed early during ownership.
Overheating situations don't self-correct permanently and the next event could be much more inconvenient.
There may be a different issue causing the electrical problem.
Jimmy
Melting Slicks
Joined: Mar 2013
Posts: 3,104
Likes: 626
From: Baton Rouge LA
Back from Fisher Chevrolet.... Driving back from Yuma, I now think that it is the battery...Many weird things were happening, like the center stack rebooting and the steering wheel radio controls not working, as well as the battery gauge needle not pointing where it is supposed to be pointing.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
jimmyb and iclick:
Quoted from jfinkows post #14 on 1/18: " Temp gauge had a pegged temp needle. Got about 4 warning messages. So I stopped, about 80 miles from Yuma. The car released fluid through the overflow."
With the fluid release this appears to be a true overheat and not just an electrical glitch.
Quoted from jfinkows post #14 on 1/18: " Temp gauge had a pegged temp needle. Got about 4 warning messages. So I stopped, about 80 miles from Yuma. The car released fluid through the overflow."
With the fluid release this appears to be a true overheat and not just an electrical glitch.
Last edited by NSC5; Jan 20, 2016 at 03:44 PM.
Race Director
Joined: Jan 2005
Posts: 13,934
Likes: 4,257
From: NC
jimmyb and iclick:
Quoted from jfinkows post #14 on 1/18: " Temp gauge had a pegged temp needle. Got about 4 warning messages. So I stopped, about 80 miles from Yuma. The car released fluid through the overflow."
With the fluid release this appears to be a true overheat and not just an electrical glitch.
Quoted from jfinkows post #14 on 1/18: " Temp gauge had a pegged temp needle. Got about 4 warning messages. So I stopped, about 80 miles from Yuma. The car released fluid through the overflow."
With the fluid release this appears to be a true overheat and not just an electrical glitch.
Jimmy
EDIT: Nope, I did read it right. You are quoting someone else, the OP does not mention any coolant release
Last edited by jimmyb; Jan 20, 2016 at 03:50 PM.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
You are correct, I was responding after the thread split with a second poster who had the coolant loss through the overflow. My post 22 was the response to jfinkow in post 21, I should have quoted his prior post to make that clear.
Rodger
Le Mans Master
Joined: Feb 1999
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Advanced
Joined: Dec 2007
Posts: 58
Likes: 9
From: Henderson NV
Wow. No battery problems!
The overheating was caused by a misshapen surge tank cap. They changed the whole thing: 4031280 Radiator Surge tank replacement
The weird stuff going on with the infotainment screens and stuff? Reflash:
2880178 PI1101 2014 Corvette reprogram BCM, HVAC, Radio, IPC
16953 …per Si doc 3767523
I need to take another long road trip!
The overheating was caused by a misshapen surge tank cap. They changed the whole thing: 4031280 Radiator Surge tank replacement
The weird stuff going on with the infotainment screens and stuff? Reflash:
2880178 PI1101 2014 Corvette reprogram BCM, HVAC, Radio, IPC
16953 …per Si doc 3767523
I need to take another long road trip!
