I have had three codes show up on my coder reader but don't know wher to start looking for the problem. Here are the codes P0727(engin speed, no signal), P1810(PSS intake manifold faulty), an P1780(Transmission control switch out of selftest range). Could anyon please help me out. The problem with my car is that when it's hot th car will not start but it will turn over. When the car is cold it wil start fine. I have a 2000 LS2. If anyone could help me please let m know