Southern Belle Heat Spell

My car, a 2001 Chevrolete Impala, has heat spells. I found this out when I came down to Jacksonville, Florida. It's hot, obviously it's Florida, and the heat of the afternoon prevents ignition. I am not exactly sure how. My guess is that the heat trips a sensor that prevents electronic operation of something and that makes the security system prevent ignition. Maybe it's more direct, I don't know. When the heat of the day subsides, my car will start.

To combat this, I opened windows, not enough. I borrowed a sun shield, it might work. A solor powered ventilation system is on it's way. Hopefully, these simple measures will prevent me from visiting a dealership and make me overheat.

Update: It was a dying battery, which explains the heat based perfomance failures. It was a corroded fuse to the ignition power relay, replaced thus repaired. Disconnected the battery overnight, this might work.