Heater fan quit working

http://www.bbbind.com/free_tsb.html Do you know how to do automotive electrical testing , how to find a short circuit . Blown fuse's indicates a dead short to ground . Electric Testing Techniques You Need to Know c How to read an electrical diagram Lesson 1 If you want to fix electrical issues on your vehicle these are thing's you need to know . How to find an electrical short on Subaru or any other car

David I dont have th schematics for your fuseblock layout for your vehicle but when I am having problems with a component in my vehicle I use a pair of pliers or a fuse puller and pull all of the fuses one at a time and check them for being blown. If I find a blown fuse I replace the one blown with the same size. If you are having problems with the fan motor I would suggest that you find where the wires hook up to the fan and check them for 12volts using a volt meter. If you have the voltage chances are that the motor in the fan is no good. Hope this helps

First of all, if your horns are not working, it is NOT CAUSED by a fuse! Fuses do not cause electrical system failures. Blown fuses are ALWAYS THE RESULT of an electrical system failure.

Please read the following articles:
Where's The Fuse?

What Else Could Be Wrong?

Also, if you need an Owner's Manual, a free PDF version can be donloaded at the link below.

1997 Buick LeSabre Owner's Manual

Blown Fuse

• Usually the first thing to inspect when the blower fan stops working is the fuses to see if any are blown. Locate the 10A cluster fuse or the 25A HVAC fuse in your car manual, and examine them to determine if they need replacing. The car owner's manual will tell you where to find the fuses that are connected to the heat and/or air conditioning. On the interior fuse panel of the car, a 30 amp fuse is labeled "Heater" or "HVAC."
  

Bad Blower MotorIf the fan only works on setting number 3 or 4, or just on the highest setting, it is most likely that your blower motor is failing and is about to die. Use a voltmeter to test the amount of voltage at the blower motor connector with your ignition on and AC running. If it reads 12V, the motor needs replacing.Automatic Climate Control SystemAnother thing that causes the blower fan to malfunction is the Automatic Climate Control System (ACCS). If the ACCS's settings are off, it may cause the fan to stop working. If it is the climate control on the car, typically it is a bad thermostat or electrical circuit that is the culprit.
hope this helps, James Booth

BY COMPLETELY STOPPED WORKING I ASSUME THERE IS NO AIR FAN BLOWING OR THERE IS NO WARM AIR COMING OUT OF THE VENTS? IF THIS IS SO, FIND THE FUSE THAT CONTROLS THE HEATING SYSTEM AND SEE IF IT IS BLOWN, IS SO REPLACE IT. IF IT WORKS BUT BLOWS ANOTHER FUSE YOU HAVE A SHORT. BEST LEFT TO AN EXPERT. OTHER THEN THAT THERE IS NOT MUCH MORE THAT CAN GO WRONG WITH HEATERS, THERE IS HOWEVER AN OUTSIDE POSSIBILITY YOUR TSTAT IS STUCK CLOSED OR YOUR ENGINE FAN IS NOT WORKING IF IT IS ELECTRIC, OR YOUR FAN CONTROL MODULE IS ON THE WAY OUT.

The dealership knows, but they won't tell you so you take it to them and they make the money doing the job!!

First of all, check that fuse. It may be blown. If so, replace it with a 30 amp fuse if that is what the owners manual or fuse panel states.

Now, about your problem, does your heater blow on low and high, but nothing inbetween? Or maybe even only on high, but none of the other settings? If so, it is your 'blower resistance module'. It is an electrical component located up under your dash board, possibly on the passengers side, up beside the fan blower itself. Find your fan vents where they come out the bottom of the dash and locate a black plastic box that resembles a relay. It will have a wiring harness attached to it, with about 4 or 5 wires. Take out the 4 - 1/4" or 5/16" bolts. Disconnect the harness.

The new one will probably have to be ordered in for you, around $30-$40. Try your local auto parts store or AutoZone.

Check your fuses. First check your owner's manual for fuse box locations. If a fuse is blown it will have a break in the small wire that runs through the inside of the fuse or the inside will look charred and black or brown. Try going to a store that sells fuses and looking at new fuses to get an idea of what you'll be looking for. Your fuse box is most likely located on the side of the drivers side dashboard. You'll have to open the door to access it. If it isn't there, other likely places include under the dash on either side or in the glovebox. If the fuse box diagram isn't on the cover it can likely be found in your owner's manual. I imagine each of those controls are all on the same fuse and that would explain why they all went out at the same time. Should you find that none of your fuses are blown there is another set of fuses under the hood. You'll find them inside a relatively small rectangular or square box under the hood possibly marked "fuse box". Again the diagram should be on the cover and if it isn't check your owner's manual. If none of those are blown then my next idea would be that there is a short somewhere along the entire circuit in which case only a technician could diagnose and help you with that. A short in your circuit could cause a fire and burn down your car so I suggest that you fix this problem as soon as possible. Hope this helps:)

u want to check ur fuses and start checking for power possible outcomes blown fuse, bad cluster,a short in harness to cluster or fuse block , something to do with the electrical system or possible the ecm or control module. Recommend repair facility if u dont now car electrical systems

The blower fan fuse in a 30amp, light green in color. When the fan would not work, was there an abs light on or power windows or radio inop also?

yes there is a fuse
what kind of nest? did something chew through a wire?
could be under dash or the fuse box under the hood if you still have it check the owners manual in the glove box dont jump steps and just replace the fan could be fruitless