No trouble codes but I have a list of problems that could be related. When it is VERY cold out (0 or less), my cooling fans for the radiator will kick on. However, if it is above 0, the fans never turn on and the car will almost overheat on hot days. Heater blows fairly warm air out the passenger side but ice cold out the drivers side. Cooling system has been flushed and flows well, All vacuum hoses are hooked up. It is almost like there is a door in the heating part that is staying open causing the cold air to come in. AC works so-so in the summer but takes awhile to cool down. No complaints there though. Thermostat works, engine reaches running temps. I'm a fairly gifted mechanic but am clueless here. Spent 900$ last winter trying to get this problem fixed and the GM dealership said they had no clue and passed over a bill to me. Please help. It's -10 here.
Dec 17, 2008 at 10:34 AM