Question about 1997 Buick LeSabre

2 Answers

I was checking over the car. When it was sitting there turned off,I heard clicking on and off on the firewall.Later, I noticed the heater was staying on with the key off. It drained the battery. I pulled the fuse for the heater, and it still drains the battery. I think it's the relay switch somewhere..Do you have any solutions? I had an e-check before this incident, and it passed. I appreciate your looking into this problem.. Greg Cox

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  • Krista Cox
    Krista Cox Oct 08, 2010

    My car battery is being drained. When I unplug the battery and replug it in, the heater fan comes on.I pull the fuse, still draining the battery.And, the key is off.What is bypasing to make the connection?When it was sitting, it just started clicking on its on, down low by the back of the motor.I appreciate your feedback..Thanks!

  • Krista Cox
    Krista Cox Oct 10, 2010

    I started pulling fuses to find the drain. I am still hearing the clicking noises , low down by the transmission by the driver side.Why is it bypassing , when the key is off? The heater fan comes on.. I t just seemed that everything was fine, when it all started to click. I couldn't locate any module under the dashboard.It just seems so strange how it bypasses. When you pull the fuse for the fan , I wonder if that was the problem....It should stop the drain. I appreciate any feedback..Thanks!!

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  • Buick Master
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Yes, it's the relay or module for the fan. It's located under the dashboard or at the firewall area.

This happened to me on my 1990 Cadillac Deville, which is also a GM product, and the module and fan had to be replaced.

Posted on Oct 09, 2010

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  • Duane Wong
    Duane Wong Oct 11, 2010

    On my 1990 Cadillac, for instance, the fan is controlled by a relay that if stuck closed will bypass the ignition key. I have a feeling that this is what you are seeing on your car.

    The wiring could have a short that occurs in between the battery and the fuse box.

    It may be necessary to take it to an auto electric repair shop to find and repair the problem, if pulling the fuse out doesn't solve the problem, right away.

    Good luck on this repair.

  • Duane Wong
    Duane Wong Oct 19, 2010

    On my 1990 Oldsmobile Cutlass Calais there are relays on the firewall which are a box-like rectangular or square shape. On my 1997 Cadillac Deville Limo I am not sure how it's set up because I haven't had a problem with that relay, only relays that were square and located down by the cooling fan for the radiator, which were replaced.

    Relays can show up in various places depending on the year, make, and model on GM cars.

    All I can say, about the clicking, is to follow your ears down to the clicking, and you may find a relay, in this case, by the transmission on the driver's side.

    Good luck on this repair.

  • Duane Wong
    Duane Wong Oct 19, 2010

    If removing the fuses doesn't stop the heater blower fan, then it may indicate a short somewhere before where the fuse controls.

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  • Master
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It could be the wires in the distrib cap are making contact with the rotor.

also have a look on this video for more help:--

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation

Posted on Oct 08, 2010

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