Well there arent any numbers on my gauge. It's just in four quarters, and the last quarter is red. I do get heat, but not as much as I would think should come out. It get's hotter once it heats up to a quarter way. I bought the stat from GM and they said it was the one recommended for that car. I just don't want to cause any damage to my car if it's running too cold here in Canada, lol. Most cars I get in sit half way on the gauge while driving, that's why I am wondering why mine doesnt.