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Chevrolet Impala Lighting/Electrical Problems

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  • stinkymarystinkymary Posts: 2
    Have 2001 Impala w/small block V8. I sometimes hear a metallic tick in the dashboard. After hearing this, the AC will go off, the radio displays CAL ERROR for a few seconds then displays LOCKED. At the same time, the message display will alternate between the red the generator, security and service engine soon messages and the warning bell (the one you get with the key in the ignition) sounding in the background. This ususally happens late in the day going home from work when the car is warm from sitting in sun (and the dealerships are closed). I took the car in for repair and they called me saying they could find nothing wrong. They checked the alternator and it was displaying correct voltage. Any ideas?
  • revjim64revjim64 Posts: 77
    I have an 02 Impala. I suspect the Body Control Module is defective.
    I had the blinking security light, noises under the dash and the airbag light would stay on.
    I had the BCM replaced and everything was fine.
    It seems like defective BCM's are a common problem for the 01-05 Impalas.

    Plan on spending 350-400 dollars to have it replaced and programmed.

    Good luck!!
  • taznjotaznjo Posts: 1
    I am having a similar issue as everyone else. '01 Impala has always had the airbag light on constantly, the blinkers go on the blitz but can be remedied with a quick jab at the flashers.

    Then my power door locks went out a couple weeks ago and the Security light started coming on everytime we turned the car on and sometimes just randomly driving down the road. If we stopped, turned the car back off and on again, it would usually fix the problem.

    Today we hopped in the car and headed down the road and about 100 feet from the house noticed none of the lights on the instrument cluster were on, actually it wasn't even working. So we pulled over to restart the car (that seems to help often) and when we went to start it up again, nothing. Dead. No turning over, no clicks, nothing.

    Oh, and did I mention we are now living in Germany, where Impalas are as rare as a buffalo in NYC. Except for the MP cars, but they don't matter, because they are serviced completely my military personnel, which won't even bat an eyelash our way.

    A kind American stopped by and told us to pull the battery cable, let the car set for 10 min and try to start it up again. That worked.

    Now what?

    The nearest place that will even look at Impalas is about 3 hours from here.

    After reading many posts here I realized we may be looking at the "FAULTY BCM" that is causing everyone stress. We found one online for about $15-$20. But if we replace it (somehow) does it still have to have some sorta factory programing done on it?

    This wouldn't be so bad if we weren't in a country where people don't like to speak English and definitely don't like American made cars.

    HELP!
    - Tawny
  • cwilcoxcwilcox Posts: 2
    i have a 2004 impala and the turn signals will come on but will not blink can anybody help? please?
  • I have an '03 LS with the Sports Appearance Package. Just recently, I started having an issue when using the key FOB to unlock/lock the car and open the trunk. If I use the FOB to either unlock the car or trunk, the reverse lights and headlights come on and flash like they're supposed to, but they never stop now. If I enter the car, I can hear a clicking, similar to what you'd hear if a relay was engaging/disengaging. They only way out of this condition is to turn the car onto the ACCESSORY or ON position. It stops the clicking and turns the lights off.

    Any suggestions please?
  • csancsan Posts: 5
    To all having a problem with the security light... call GM corporate and complain and ask to get a recall on this. Apparently recalls are initiated only after a lot of people complain. I called 1-800-222-1020 this morning to register my complaint.

    My 2002 impala has been having the security light/not starting problem for probably 9 months now. We had been trying the wait 10-15 minutes with key in on position (to clear the codes), shut off, then turn on and had success most of the time. Finally took the car to the dealer today. They claim it is just the passlock sensor in the ignition cylinder but costs upwards of $400 to replace (just for the ignition cylinder. If it were the BCM, which they don't think it is - that would be $600-$800). Either way - save your receipt. If enough people complain and a recall is issued then the rest of us should be able to get reimbursed for this repair.
  • csancsan Posts: 5
    To all having a problem with the security light... call GM corporate and complain and ask to get a recall on this. Apparently recalls are initiated only after a lot of people complain. I called 1-800-222-1020 this morning to register my complaint.

    My 2002 impala has been having the security light/not starting problem for probably 9 months now. We had been trying the wait 10-15 minutes with key in on position (to clear the codes), shut off, then turn on and had success most of the time. Finally took the car to the dealer today. They claim it is just the passlock sensor in the ignition cylinder but costs upwards of $400 to replace (just for the ignition cylinder. If it were the BCM, which they don't think it is - that would be $600-$800). Either way - save your receipt. If enough people complain and a recall is issued then the rest of us should be able to get reimbursed for this repair.
  • I receieved a callback from my dealer who has my car for service. He tells me they have to replace the BCM (Body Control Module). It sounds like the componant is the brains of the vechicle, since it controls so much.
  • I just picked up the car. All is well again, so the BCM was definately the issue. I appears the lower left side dashboard cover plate needs to be removed to replace it, that's it. I was fearful that they'd have to really tear into the dashboard.
  • captsewercaptsewer Posts: 3
    I am having the same problem, I am being told to buy a bypass module used for remote starters. I understand the problem can also be in the ignition switch. Apparently there are two little magnets in there that senses the alinement of the key and if it is a little off, the car won't start. Often while driving the security light comes on, maybe I have too many other keys on the FOB...
  • cwilcoxcwilcox Posts: 2
    Can you or anyone for that matter tell me how to replace it or is it something that has to be done by a mechanic?
  • My 2002 Impala has just begun a very annoying problem. Three times now over the past 2 weeks I have tried to start it and it acts like no power is going to the starter. No clicks like a dead battery, nothing... The radio plays, all electronics come on inside the car, but it will not even attempt to start. Each time, while waiting for the towing service I have continued to try to start it and it finally starts. I have taken it to the dealer twice now. First time, they replaced the battery and the car started fine for two weeks, then stranded me again yesterday... Same problem. After more diagnostics at the dealer today they now say that they don't know how to fix it because they can't duplicate the problem. Has anyone else had the same problem and figured it out?
  • pcameronpcameron Posts: 7
    Go back through the letters to this site and you will see that many have had the same problem. Your dealer must be playing dumb. In my case, the dealer replaced both the ignition switch and the BCM module. They interact, and the ignition reads your key, and thinks you are stealing the car, and your BCM module shuts down the starting process. If you have to pay, try replacing the ignition switch first. (The dealer likes to get the trouble code from your computer before fixing, but sometimes it does not show, sometimes it does. This is such a chronic problem, they should be fixing it for free (my dealer did, on extended warranty).
  • pbaranellopbaranello Posts: 36
    Someone hit it right on the head. The 4 way flasher and the turn signal are the same unit.

    IF you have an extended warr. or it is a recall they will do it for free.

    Th relay craps out, the temporary fix is: if this happens while driving just tap the emergency flasher button and the signals will work again for a while.
  • I have an '02 Impala. Friday afternoon I went outside and noticed that the trunk was opened. I closed it. 2-3 minutes later, it popped back open (I could hear the auto switch release it) and I could hear the "ding-ding-ding-ding" warning tone inside the car. Closed the trunk again and started the car up, just to see if something needed to be reset. During the startup, I heard the trunk release open 10 or 11 times, in rapid succession. Turned the car off and closed the trunk. It popped back open again and "dinging" inside the car. After a few minutes the "dinging" would stop and then start back up again a few more minutes later. Disconnected the power cable from the trunk latch release. Trunk didn't open anymore but still got the "ding-ding-ding-ding" warning tone AND the "Service Engine Soon" message. It finally ran down my car battery.

    Help, please?
  • quietproquietpro Posts: 702
    Any chance your FOB has the trunk button stuck? Might be worth a shot to pop it open and remove the battery. Otherwise, sounds like it could be a Body Control Module (BCM) problem. I've been seeing lots of those in the forums. If your car is OnStar equipped, you may want to try them. They will be able to tell you if any computer fault codes are stored. Hope you find a solution...
  • nc_2_vanc_2_va Posts: 1
    Which relay is it, there are two DRL/EXIT LTS and EXT LTS. So if it's the relay how does tapping the emergency flasher fix a blown relay. I tried tapping it and it worked for a while, I didn't think a relay worked like that. Anyone else had this problem and fixed it?
  • pbaranellopbaranello Posts: 36
    It is not a relay you can fix. It is not a lone relay. The Turn signal module is the same module as the 4 ways; EMERGENCY FLASHERS.

    This unit is mounted high in the dash board.

    You know where your 4 way flashers are, right ..???

    The relay does not fail, it just gets dirty or worn and it works sometimes when the directionals fail, if you tap or depress the 4 way flasher button.

    To change this module yourself is a project, have Chevy change it. And fight with them, because this is something that should not fail in 4 years..!!
  • I have an 2001 LS 3.8 V6. Did you receive a letter from GM saying regarding your Converter? I a recall that is not a recall.

    So my suggestion would be have them check to make sure that your converter is not clogged. GM should replace it for free.

    My other suggestion is the alternator. That is exactly waht happened to me when mine went out in the back woods of Florida on a Sunday.

    Good look!!! :blush:
  • bosompalbosompal Posts: 5
    The message center reads Security and stays on. Sometimes it reads security and door ajar switching from one to the other. Sometimes it reads nothing but when that happens the AC doesn't blow cold air. It seems to change from one of the above mentioned after car is turned on and off. Any suggestions?
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