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Buick Regal Electrical Problems

regalmamaregalmama Posts: 1
My 1997 Regal suddenly had no A/C fan, cooling fan or cruise control working. After 15 minutes or so, everything came back on. Now it happens every couple of days, lasting from 15 minutes to 24 hours. When they're not working, turning the fan knob on cause the headlights to go off completely even though the fan won't come on. I've had the battery and alternator checked and they're OK. Anyone have any suggestions?


  • bporter1bporter1 Posts: 229
    The electrical gremlins have struck again. Everytime it gets really cold out, I have no blower fan for the heat or the defroster. When the temp is above freezing, I have no problem. I took it to the dealer,and they said that it could be the control panel, or the blower resistor. They could not duplicate the problem because it was not cold out. Now this morning I had no blower, but this evening I did. Anybody else have this problem? I did not want the dealer to change any part and still have the problem. By the way I have 99 Regal GSE, and I am on my second climate control panel. The car has 97,450 miles. Any theories would be greatly appreciated. I fully expect to get in the car tomorrow morning and not have the blower fan not work. The dealership I took it to said to bring it in when it happens. These electrical problems I have had with this car are really giving me second thoughts about buying another GM car. This probably is my last Buick though, not very impressed with the new LaCrosse.
  • imidazol97imidazol97 Crossroads of America: I70 & I75Posts: 18,048
    Without knowing how the car is wired, my first thing to my mind is a ground problem. With an older LeSabre there are a couple of ground coupling points; one is by the left driver foot in the kick panel, the other is next to the driver seat between it and the door sill. It's a box long and thin under the carpet, just where my fingertips would touch while seated in the driver seat.

    That car had loss of air conditioning control (reverted to compresser engaged and defrost sometimes) and power door locks quit for a few minutes or hours...

    Moisture affected the grounding connections under the carpet from snow, rain, getting in there and keeping it moist for long periods.
  • nels1nels1 Posts: 25
    I had a similar problem with my 03 GS. No air, No cruise, No heated seats, No display panel. The battery had gone dead after an 8 day period in a airport parking lot. Anyway the problem turned out to be the ignition switch.
  • rturner11rturner11 Posts: 1
    I have a 98 Regal and am experiencing the exact same problem. I have found that I can leave the fan switch on high and the fan and lights work fine. Still no cruise though. I was wondering if you have found the culprit to this problem.
  • tkhtkh Posts: 2
    I have a buick regal gs 2002. My low tire light came , I had it checked and tires aired but the light is still on. Don't have a manual but have been told there is a reset swith somewhere. Anybody know where this is.
  • tsu670tsu670 Posts: 293
    There is indeed a "Low Tire" reset switch. It is located with the fuses on the passenger end panel of the dash board.

    With the front passenger door open:
    1. Pull the fuse access panel off the end of the dash with your finger (might need a good yank).
    2. Locate the red button marked "Reset".
    3. Turn the ignition switch to the "On" setting, but do not start the engine. Note how the "Low Tire" indicator comes on.
    4. While watching the dash indicator reach back and press and hold the reset switch. The "Low Tire" light will flash a few times, then go off after just a few seconds.
    5. Release the switch when the light goes out.
    6. Replace fuse access panel and close the passenger door.

    It might be worth remembering this procedure as you will need to repeat it after any of your tires are removed, such as when rotating tires or doing brake work.
  • tkhtkh Posts: 2
    Thanks so much, worked great and I learned something new, all sort of things in that panel.
  • jipsterjipster Posts: 5,345 too! Mine had been on as well(after a tire rotation). :blush:
  • tsu670tsu670 Posts: 293
    You're so welcome! By the way, since you don't have a owner's manual, the thought occurred to me that you may not be aware of the passenger cabin air filter. Some of us replace it once a year. The replacement is usually filthy. Anyway, if you decide to tackle the project, there are instructions in post #1281 on this board. I recently found a good price for replacement elements at, but you might have better luck shopping around.

    Also, I highly recommend you inspect the condition of the engine coolant. Perhaps you have heard some of the horror stories going around about Dex-Cool (nick-named "Death-Cool"). It is touted to be good for 5 years or 150,000 miles, but many who trusted that statement have found sludge in their radiators and having to replace head gaskets at around $850. My suggestion would be to check the level in the overflow tank monthly to avoid letting air get into the cooling system, and to have the system flushed after 3 years, not five.

    All the best, Ken.
  • jipsterjipster Posts: 5,345
    I replaced my cabin air filter for the first time (have had my 99' LS a year and a half) It was so filthy I wonder if it had ever been replaced. The air inlet at the base of the windshielf sucks in all the small debris that comes off the windshield. Valvoline instant oil charged me around $44 I believe. :sick: Autozone didn't have one...but I will sure look a lot harder next time. Looked easy to put in.
  • I own a 1996 Buick Regal Gran Sport and I have been having a problem with the car shutting off automatically. Once the car is stopped I am able to turn it back on. When the car shuts off, everything else is still on (headlights, radio, dashboard lights) but the engine stops and I obviously lose power to my power breaks and steering. What would cause this?? Any suggestions would be helpful.
  • tsu670tsu670 Posts: 293
    Gee, this is a tough one, but I think the first thing I'd check is the ground wire to the engine. At this age, the connection might be corroded and need some serious brightening up (cleaning).
  • Buick Regal, 1994

    Turn signals - left, none working
    right, only rear works
    Hazards not working at all.
    Checked all bulbs and fuses, all good.
    any ideas????
  • tsu670tsu670 Posts: 293
    This is just a shot in the dark, but sometimes in a car as old as this (11 years), the dielectric grease dries out in the bulb socket so the connection is no longer any good. You can get small packets of the stuff at your local auto parts place.
  • I have a 94 Regal that was running fine until my wife turned the
    ignition switch off. It will not crank over now. It is not getting fire to
    the starter solenoid. I have found out that it has an anti-theft relay
    and module and think it may be the anti-theft module. The fire from the
    ignition is going through the relay. I checked this with a test light. I
    was also checking voltage to a yellow wire with a black stripe that
    goes to anti-theft module from the anti-theft relay and the vehicle
    started. I removed the test light from the circuit and it went dead. I am
    taking the dash out now to try to find the anti-theft module. Would
    appreciate any advice and if any one knows how to wire around the anti-theft
    devices let me know.
  • imidazol97imidazol97 Crossroads of America: I70 & I75Posts: 18,048
    Does your car have the chip in the ignition key?

    Does the security light come on when the turn the key to "on"?

    Does the security light go off after 15 seconds or so if you don't turn the key to crank?

    When you crank do all the lights stay on on the dash but you get no clicks or anything when you turn the key to crank?

    If you get no crank, does it act like it blinks the lights when the turn to crank for 3 times and then after that acts like there's no key or anything turned to crank? The security lights stays on for 3-4 minutes and shuts off allowing attempt to restart with clean key or new key.

    Check here

    If it's the wires in the column between the connector at the base and the ignition switch where the contacts touch the key, the correct two wires can be identified at the base and connected with a resistor of the appropriate value and that will fool the VATS module into thinking it always has the right key inserted!
  • I have two keys with the chip in them. When you go to start position you get voltage out of the ignition to the theft deterrent relay which is under the dash on the passenger side. I am told there is a theft deterrent module after the relay and before the neutral safety switch. When you turn the key on all lights work and when you try to start the engine no lights dim or go out. I have not noticed a security light.
  • There is not a security light on the dash. When you engage the start position nothing blinks or clicks. I went to the web site you sent me and found the anti-theft page. I then found a two wire connector under the steering column which are 2 wires one white with a black strip and the other purple with an orange covering over both of them. I unplugged and while putting the key in the start position I checked for omns at the wires and nothing. This led me to believe the tumbler was a bad. I then checked for voltage at the other side of the connector and didn't get any. Does the module send voltage to the key tumbler and somehow the chip completes the circuit when in start position? I am a mechanic but electrical has always drove me about crazy. Thanks for all the help.
  • imidazol97imidazol97 Crossroads of America: I70 & I75Posts: 18,048
    I would think the operation would be like the LeSabre's. In the owner's manual does it say anything about what happens in the way of a light if the wrong key chip is inserted? I wonder if a light bulb is out on the dash...
  • I looked in the owner manual and there is nothing about a security light. There is nothing in the owner manual about a security system. I don't remember ever seeing a security light on on the dash. I have had the car almost four years. It has been very reliable until this. I am going to check and see if any one sells a vats bypass module.
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