I just bought my wife a 2000 Grand Prix GT, it has 139k on it and we got it from the original owner who as far as i can tell took very good care of the car. I have to replace the fuel pump/Sending unit due to the gas gauge fluctuating. Other than that, it has dual climate control and the drivers side works fine but the pass side just blows cold air no matter how high i turn up the knob. Also, it seems like the car takes a long time to heat up. Where should my temp guage be after the car is warmed up ? does anyone know where to start as far as the pass. side not getting heat ? thanks for any help !!!