I found this....
Chevrolet Camaro has inadequate heat shields that fail to protect the starter motor from engine bay heat. The additional heat allegedly puts resistance on the electrical conductors inside the motor, which forces it to use more power than usual to start the engine. This, in turn, can allegedly wear out the motor prematurely. It also says the starter motor issues will typically manifest in hot weather or directly after being driven and that the heating issues can damage the vehicle’s wiring and battery as well.
His wiring might be damaged.
