Starting on steep grades
What could be the problem is,that when you try and start your corvette
on a steep hill,you are also pushing down on your clutch,as its a manual box,
because a lot of cars the handbrake wont hold ,so you leave it in gear to help
the car from rolling down hill.Pushing down on your clutch while trying to start
in some cases puts more strain on the motor and starter motor,depending on
make model of cars, and i know it should not, but years ago ,i was a used car appraisor
in New Zealand,and most cars there are stick shift ,that used to be a problem with older Brittish
and Japanese cars and some GM holdens.