Question about Buick Park Avenue

2 Answers

Got into the car yesterday morning and the heating fan is not blowing. Naturally, no heat or defroster, etc. Am not sure how to check fuse. Can you tell me where to locate fuse, and if it's not a fuse, what it could be and ballpark cost to repair? Thanks so much.

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  • clara_chandl Dec 17, 2008

    Guy at Advance Auto checked fuse and relay are both good.

  • clara_chandl Dec 18, 2008

    No air coming out of vents. Fan made no loud noise of any kind prior to stopping working.

  • clara_chandl Dec 18, 2008

    Thanks, everyone, for your help. Will take to shop when possible. Everybody keep warm!

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  • Buick Master
  • 6,982 Answers

Fuse is in the fusebox... inside of cover is labeled. Easiest and fastest way to check is to pull fuse and stick another in there! If it blows, there's a short somewhere. Generally the blower motors make all kinds of noise before they go, but not always. Can't estimate cost be4cause I don't have a diagnosis yet! (kind of like asking how much does an operation cost>>>> a wart removal or open heart surgery???? Get it?)
Good Luck!!!

Posted on Dec 17, 2008

  • Richard Scordino Dec 18, 2008

    how much experience do you have especially with auto electric? If you have some, trace the wire (usually purple on GM cars) from the blower motor back to the resistor block (I doubt if you will find a problem however because there are three resistors, each serving one speed of the fan it is unusual for all three to burn out at the same time. The bunny guy is right though... if the blower goes on when you apply 12v to the motor terminal, you can bet that the motor is shot! Providing the housing has a good ground and that the guy who checked it out for you knew what he was doing. Advance has proven themselves to be unreliable to me personally and actually cost me big $ because of a defective part. But the store I dealt with is not the store you went to so &but I would feel better with a second hands-on opinion.
    You can check out wiring using any hand held volt meter that reads at least 15volts. Cheaper but tells you less would be a test light... but for instance, what if the blower is seeing only 5volts? the light won't tell you that but 5v won't run the motor. Also: if your vehicle has automatic climate control there are more things that can go haywire. (control modules etc.) That's when you will need a really good wiring diagram specific to year and model. When testing, turn key to run position (without starting engine) Check voltage at blower motor, fuse, relay, then resistor block fuse, relay and resistor should have voltage both on the supply side and the "out" sides Motor terminal voltage should read close to battery voltage: normal:12.5v at battery, 11.5 at blower.Example... not exact #s. Only do what you are confident to do... make sure anything you unplug goes back exactly where you took it off. I've had more in-shop diagnosis problems caused by someone messing with stuff, than the actual original problems ever were! Most of this is not rocket science, just logic.
    Good Luck!!


  • Richard Scordino Dec 18, 2008

    Unbrave eh??? Or cold and pressed for time....Hope it's cheap and simple!!!!
    Merry Christmas
    RS


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  • Master
  • 5,158 Answers

It can be a fuse or a relay.... they are located under the dash

Posted on Dec 17, 2008

  • Roberta Smith
    Roberta Smith Dec 17, 2008

    next option is the resister block located on the duct work under the dash... passenger side near the fan.... has wires going to it and two to three screws holding it in.



    quick questions.... you cannot hear the fan at all or it's going but no air is coming out of the vents ?

  • Roberta Smith
    Roberta Smith Dec 18, 2008

    if the relays and fuse are fine ... that narrows it down to the fan or the resister block.... and of course the switch itself... be that as it may you need to apply power to the fan... if it starts then you have ruled that out... if it doesn't you have found the fault.



    Robert

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