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GMC Sierra, Bolt, Sky, Mach E
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Its possible they have discovered the need for more cooling system surface area, I have noticed my Hummer with the clear roof panels, on a hot day, and after DC charging, has trouble keeping the interior cool. I have tried to figure out if this is related to the HVAC system, or the solar radiation that gets through the roof panels? My recommendation to people like @azbill living in AZ or other hot areas, avoid those clear roof panels a lot of heat comes in through those, much more than our Audi, or Tesla which both have large glass roofs (heavily tinted).
I have no intent of getting the clear panels. I bought a clip on shade for my Mach E roof and keep it on all summer.
 
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