Olds silhouette heater blows cold air

does the air not blow when it is turned to hot or does it blow but just not hot? If it blows but not hot you need to replace your thermostat and heater core which looks like a little radiator under your dash.

Sounds Like A Problem With your thermostat. Good Luck

flush system as u replace heater core i think its clogged

check coolant level in radiator and coolant bottle sounds like it may be low on coolant

Sounds like it could be your thermostat stuck open

Overheating problems usually warrant some troubleshooting. First, check your antifreeze level. If it's low, replace it, run it for a couple of minutes with your heater on, then recheck it. Next, your thermostat could be stuck. For about 30 minutes worth of work, and about $10 of parts, you can do this replacement yourself. This will usually give you the symptoms of having one coolant hose being hot and the other cool, if it's the thermostat that's stuck closed. The next place to look is the water pump. There aren't too many reliable ways of testing one of these at home, so it's pretty much a replace and pray, because if it isn't, then it's something more serious like a blown head gasket or a cracked head. These last two can disclose their presence by evidence of oil or antifreeze leakage, or white smoke when you first start up your vehicle in the morning, but will not always do this.

Hello.Maybe I can steer you in the right direction. There is an actuator temp,door motor.It may be hard to find,but most of them are on the bottom of the blower box about where the ac hoses and the heater core is,under dash.This motor has gone out,it switches from cold to hot ,and all in between .Hope this is helpful.If not let me [email protected]

your A C DOORS vacuum actutator is not working or getting vacuum.or doors stuck.if you got climate control .could be out calibration .the dealership has to do it.

I would check the coolant level in the radiator and oreservoir to make sure you don't have an air bubble trapped.

I had the same problem in October 2008. My mechanic fixed the water pump and the serpentine belt to solve the problem and it worked! It cost $250.00.

Cathy C.