If I don't drive my Blazer everyday, I have to "warm" my tranny up. I assume this is not good. I have to run my Blazer for about 5 min. before the trans go into gear. It is a turbo 350. After it is warm, it shifts no problem and doesn't slip or anything like that. IF I don't wait, you can out it in gear and give it gas and it won't move. The transmission fluid is full, that was the first thing I checked. Is my tranny toast?