1997 Pontiac Grand Am

Engine Cooling problem
1997 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 115 miles

ok my car heats up when I am idileing or when I am in stop in go traffic. When I turn the heater on it returns to normal tempeture. The coolant level has sayed the same it is not leaking as far as I can see! Also when I am driving 55mph it does not over heat at all only when I am ideling or in stop or go traffic! What could be the issuse?
October 10, 2009.

Make sure the cooling fans are working, if not then fuse, relay or fan motor.

Oct 11, 2009.