Heater problem on Chevy Venture?
About a year ago my van started blowing out cold air no matter how long it warmed up. Now it doesnt blow out anything. While in drive it will blow just enough air to defrost my front window after I have been driving awhile. My back seat heater blows good but the front doesnt at all. What could this be? If you think you know the problem could you give me an estimate of what it may cost? I want to get this fixed ! Very difficult to drive when your window is frosted up and you have to drive to get it to thaw! Please help!!!
6 Responses
Hall + Oates
10 Feb 2010
Dragonlady
10 Feb 2010
I just traded in my venture and I had the same problem with cold air. Turns out, I was just really low on coolant. Strange but true. It blew air out better as well. I don’t know why. Check your coolant and, if it’s okay, then I have no clue. But you can take it to a shop just to get an estimate. They may be able to tell you what’s probably wrong without really charging you anything, or at least not much. Good luck.
Robert M
10 Feb 2010
Chances are that you are loosing coolant. When this happens there is no hot water in your heater core; therefore, no heat. Take a finger and run it around your tailpipe (engine cold) If your finger comes out wet, your engine is burning anti-freeze and your coolant level is low. The most obvious reason for this is that your intake manifold is leaking coolant into your combustion chambers. This is unfortunately very common in GM cars. You might go to the dealer and ask if your warranty covers this problem. GM doesn’t usually stand behind their flaws, so you will probably have to deal with this issue yourself. You can have your heating system pressure tested by a gifted mechanic to see where the leak is. Usually a leak can be found where the intake manifold joins the cylinder head. Especially, when the engine is cold and the engine metals and plastics have expanded. After the engine warms up, these engine parts have a tendency to "heal" themselves from the warmth generated by the engine. If this is your problem, the correct repair is to find a Fel-pro aftermarket intake manifold gasket and have it installed. When this is done, have your cooling system flushed and install Mercedes Benz coolant. The chemical formulation of this anti-freeze will usually prevent future problems due to it’s outstanding "gentleness" to plastics and gasket components (and water pumps, too). If by some miracle your GM dealership actually stands behind you, consider yourself lucky. Go to a Gm dealer and ask at their service counter whether this is a common problem with your type of vehicle and see what they say. You may want to contact NHTSA with your problem and see if there is a secret recall campaign on it. Good Luck!!!!
jack w
10 Feb 2010
You have dual units in you vehicle and they are separate from each other except both units work on the compressor on you a/c unit. As it is not overheating the first thing i would check is the thermostat (and as mentioned before the coolant level). Check your hoses going to the firewall after it has warmed up and if they both are not warm or hot to the touch then change your thermostat. good luck
Dan
10 Feb 2010
check the cabin air filters behind the glovebox, that can restrict alot of airflow. may also be low on coolant or have a bad thermostat for not heating up
sovatj
10 Feb 2010
ok. Ur coolant is most likely low but it could also b all the little ‘doors’ in side ur dashboard that aren’t working. most likely ur thermostat is ok because ur engine would b heating up and u would have a ‘not getting cool’ problem. is there heat coming out the back? if so then the coolant is fine and your heater core is ok also. if no then it most likely is the little ‘doors.’
plus… Chevy’s suck lol
yea, this is a common problem, check a shop, or alldata. com,