97 GT, 5 speed, stock. Drive the car extended miles (like say 50+), and it dies. Then it acts like it's in limp mode. Cools off, seems to be back to normal. No appearance of overheating, but it may be something that thinks it is. Only codes come in are some speed sensor code. ?!? Stumped, dude is coming over this weekend and I'll look at it a little closer. Thinking maybe a CTS, possibly MAF or t/b.