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Does GM have a c7 z06 overheating fix?

by Jacob
(NC)

Does GM have a c7 z06 overheating fix for the 2015 Corvette?



Answer

Jocob,

So, yes kind of. In the eyes of GM the 2017+ model years fixed the C7 Z06 Corvette cooling and overheating issues.

But some owners say otherwise. Cooling upgrades are still available for 2017+ corvettes which supports the argument a market still exists.

Radiator upgrades have been proven to improve the cooling capacity under hard driving conditions even for the 2017+ model years.
2017 Z06 C7 Corvette Cooling Problem Fixes

Radiator upgrades have been proven to improve the cooling capacity under hard driving conditions for all C7 Corvettes. This is evident for cars (even 2017+) driven in southern climates and track day events. This was an engineering standard issue and addressed in the 2019 ZR1.

GM increased the factory size of the radiator cores for 2017+ cars and implemented upgrades to the supercharger lids to release trapped heat.
C7 Corvette Z06 Supercharger Lid Upgrade 2017+

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Sep 29, 2020
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Radiator Upgrades
by: Chris

The best solution is for sure the radiator upgrade for starters.

Sep 29, 2020
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Yes Kind Of!
by: Corvette Web Central

So short story yes, long story is it depends. The 2015-16 Corvettes faced overheating challenges. This was caused by insufficient cooling and heat soak. GM faced class action lawsuits and did what they could to mitigate the problem with upgrades to later models. We have included details in our Upgrade Page here: https://www.corvette-web-central.com/c7-z06-performance-upgrades.html

The ones GM implemented on 2017-19 Z06 Corvettes were the improved Supercharger Lid and increased radiator cooling capacity. We also think its a good idea to upgrade the intercooler but GM never did that in the 17-19 Z06 models.

Realizing the error of their ways GM upgraded the body aerodynamics on the ZR1 and enlarged the radiators and cooling capacity of the limited production 2019 ZR1. As far as we know the cooling issues that plagued the Z06 is not an issue with the ZR1. If you have a ZR1 please chime in!

We suggest larger radiators and coolers with the SC Lid upgrade first then look into the front bumper for the ZR1 to improve airflow into the front of the car.

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Chris Trautman @ Corvette Assembly Plant 2019

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