Question about 1999 Chevrolet Blazer

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My '99 Blazer security alarm system goes off unprovoked.

This is a factory original system and I have found no reason for the alarm to go off (horn sounds and lights flash). I have to use the power locks to lock the rear gate and that seems to be a factor but not the only issue.

I have manually unlocked one of the front doors and manually relocked it thinking that would disarm the system but sometimes even that doesn't keep the alarm from sounding off.

Doesn't seem to matter if it is cold out or warm out. I've left the dome light off on the panel but that too doesn't seem to be a cureall although it seems to reduce the likelihood of the alarm going off.

Help! My neighbors are getting tired of the late night intrusions!

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  • 2 more comments 
  • Anonymous Jan 06, 2009

    I have the same problem on my '01 Blazer and am looking for a solution.

  • Anonymous Mar 15, 2009

    I have the same problem also. If the doors are locked with the remote the alarm will go off. If the doors are locked by hand it will not. The dome light also will not go off but this is intermitent. I have unplugged all of the door switches that could turn on the lights and still the dome light is on. I have to use the dome overide button to make it go off. The Chevy dealer told me it might be the body control module.

  • Anonymous Apr 15, 2009

    I am having the same problem with my 99 Blazer. I am convinced that there is a sensor that thinks a door is ajar -- this causes the dome light to stay on (has to be overriden) and the driver side power door not to lock (can be locked manually). Occasionally, things go back to normal. I think this is related to the problem with the alarm, which seems to go off some time after the door is locked with the remote or with the power switch. If the car is left unlocked or locked manually, it doesn't seem to happen. I can live with the other stuff, but the alarm going off is driving me and my neighbors crazy!

  • Kris Stump
    Kris Stump Dec 01, 2015

    I am having a similar issue my 99 blazer is randomly locking and unlocking itself (even though I have the battery out of the remote) and then setting the alarm off. I am getting annoyed with it going off every 30-45 min it isn't provoked at all. I literally unhook my battery to keep it from going off. I need to know what to do. I was told from the Chevy dealer its a possibility that its a shortage in the wiring, but my mechanic said the automatic lock actuator could be the issue too. I am going to leave battery unhooked til I know what to do!!

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How to turn the alarm system off

Posted on Oct 07, 2012

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Posted on Jan 02, 2017

SOURCE: remote lock for back doors and rear tail gate door

Actually I found a solution. I remove the lock relay form the fuse panel and placed it back in place. I did not replace it. After doing this they worked. I probably need to replace the relay at some point, but for now that solved the problem. It was hard for me to believe that there is a separate relay for the lock and unlock circuit.

Posted on Sep 29, 2008

SOURCE: no dome light when passenger door open

Since the passenger door doesn't get used as much as the drivers door, check to see if the switch is not just stuck. It is a little button with a spring that opens up and turns the light on. It is located on the hinge area of the door and when the door closes it shuts off the switch, if it is not stuck then I would suspect said switch.

Posted on Jan 09, 2009

keemo68
  • 1263 Answers

SOURCE: Power door locks won't unlock + tailgate won't open

your issue involves the master control switch panel on the drivers side and or the passenger side as well some how the contact inside the switch assembly has either shorted out or no longer makes contact for the unlock side of the circuit. replace the drivers side panel switchs it's either a series of switc hs or mostimes one sigle board of switchs. you are better off going to an auto parts store rather than a GM dealership this will save you quite a bit on cash on the parts. now as to the rear tailgate. if it is electronic controled and there is an issue with the master switch you can,t manually unlock it because of a safty issue built in the system. you can manually unlock the passenger compartment doors for thew same reasons of safety but doesn't apply to the tailgate. just replace the parts and this will take care of the problem

Posted on Apr 18, 2009

  • 13 Answers

SOURCE: locks go crazy,alarm goes off, now the car won't start.

I've had this problem under warranty on my '05 Malibu LS. They replaced and reprogrammed the fobs. Looking in my shop manual, it seems the problem is from the content theft deterrent (CTD) system. My car started doing this two years later off warranty and now I just lock the doors from the outside with the key or by pushing the lock stem buttons by hand on each door. The security option in the DIC needs to be set to RKE for this to work though.

Posted on Oct 14, 2009

  • 1 Answer

SOURCE: alarm and door lock malfunction 1996 Camaro z28 LT1

Hey just wondering if you ever go this problem fixed. I am having the exact same issue. Thanks

Posted on Feb 24, 2010

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Factory security system intermittently going off. Wondering if it is a bad sensor or switch. Does the door LED flash a code? 8 long flashes followed with normal short flashes.


CAR ALARM ISSUES


It can be any of the car doors not got properly locked or the door is locked but the switch is not sensing the door locked. Open and close each door again properly.

Or else its problem with any of switch wiring getting in contact with alarm wiring causing it to happen.

And last thing alarm connections need to be inspected. It's getting short somewhere in between.


There are few help links with solutions, to troubleshoot these types of problems. I suggest going through these links.


Click the link below: ------

Volvo car alarm keeps going off for no reason

http://technoanswers.blogspot.in/2012/07/volvo-car-alarm-keeps-going-off-for-no.html

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Alarm keeps going OFF

http://technoanswers.blogspot.in/2012/07/alarm-keeps-going-off.html

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2009 Toyota Camry: Hood Switch causing Alarm to go OFF?

http://whatisbyme.blogspot.in/2012/04/2009-toyota-camry-hood-switch-causing.html

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Ford Pickup Alarm will not disengage?

http://technoanswers.blogspot.com/2012/01/ford-pickup-alarm-will-not-disengage.html

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Mitsubishi Diamante: Factory Security Alarm will not go Off

http://www.howtorepairguide.com/2012/11/mitsubishi-diamante-factory-security.html

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Toyota Avalon Factory Alarm will go off?

http://repairhelpcenter.blogspot.com/2012/01/toyota-avalon-factory-alarm-will-go-off.html

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Chevrolet Tahoe Hood open warning on dash and alarm sounds?

http://schematicsdiagram.blogspot.com/2011/12/chevrolet-tahoe-hood-open-warning-on.html

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These details will help.

Thanks.

Nov 28, 2012 | 2003 Honda Pilot

Tip

How to set & cancel theft deterrent system or how to set & cancel security...


Theft deterrent system (on some models)

Theft deterrent system is designed to deter vehicle theft. The system flashes the turn signal lights and turns on the interior light or the signal lights only (depending on the model), and sounds security horn and vehicle horn when it detects abnormalities such as follows:

• Any door or hood is forcibly opened.
• The batter terminal is disconnected and then reconnected
• The system control is disconnected and then reconnected.
• Abnormal impact is detected when the impact sensor function is on.

The system flashes the turn signal lights and turns the interior light or the signal lights only (depending on the model), and sounds security horn and vehicle horn if someone attempts to damage or break into your car.

Setting the system

You can set the system with or without the impact sensor function. For details, see "Canceling the impact sensor" below.

1. Turn the ignition key to "LOCK" and remove it.
2. Have all passengers get out of the vehicle
3. Push the lock (set) switch on the wireless remote control key once. At this time, the turn signal lights flashes once and the security indicator light comes on.

The system is set after 30 seconds. At this time, the security indicator light start flashing slowly.

Once the system is set, you cannot start the engine until you cancel the system.

The system will not be set in the following cases.

• When any of the door is open; security horn sounds for 1 second, close the door and set the system again.
• When the hood is open; close the hood securely.

Canceling the Impact Sensor

The impact sensor can be cancelled to prevent false alarms from being triggered incase of the following conditions:

• When parked in the noisy area
• The vehicle body or glass is subjected to a strong impact from the (such as in highly pressurized car wash).
• When transporting by a car carrier or ferry.

To cancel the impact sensor;

1. Lock the door by pushing the lock (set) switch on the wireless remote control key once, and turn signal light flash once
2. Then push the lock (set) switch twice within 5 seconds. At this time, the turn signal flash 5 times to indicate the impact sensor function is disable.

The impact sensor is deactivated as long as the system remained armed.

Canceling the system

The system will be cancelled by the following two ways:

• Turn the ignition key from "LOCK" to "ON" position.
• Unlock any of the doors by pushing the unlock (cancel) switch

If the turn signal lights flash 3 times, the system has been alarmed. Check to see if there is any abnormality with your vehicle.

If any of the doors is not opened within 30 seconds, all doors will be automatically locked and the system will be set.

When the system is set

Activating the system; When the system detects abnormalities such as follows, it flashes the turn signal lights and turns on the interior light or the turn lights only (depending on the model) and sounds the security horn and vehicle horn of 30 seconds.

• Unlocking any door without using wireless control
• Any door or hood is forcibly opened.
• The battery terminal is disconnected and then reconnected.
• The system control assembly is disconnected and then reconnected
• Abnormal impact is detected when the impact sensor function is on.

Reactivating the alarm;

Once set, the system automatically resets the alarm after the alarm stops.

The alarm will activate again under the same circumstances described in "Activating the system".

Stopping the Alarm

The alarm will be stopped by the following two ways;

• Turn the ignition key from the "LOCK" to "ON" position.
• Unlock any of the doors by pushing the unlock (cancel) switch.

The system can be cancelled by these ways at the same time.

If the battery becomes discharged due to the vehicle being unused, for a long time etc., when the battery is recharged or replaced, the system will activate the alarm. If this happens, immediately unlock any of the doors by pushing the unlock (cancel) switch, and the alarm will stop.

Testing the system

1. Set the system
2. Insert a wireless remote control key into the key hole on the driver's door handle, and unlock the door.
3. Open the door, and an alarm will sound.
4. Stop the alarm by pushing the unlock (cancel) switch.
5. Repeat this operation for the front passenger's door.

Good luck.

on Nov 08, 2010 | Toyota Pickup Cars & Trucks

1 Answer

I have a 98 Nissan altima gxe and my alarm won't honk when I lock the car but the lights go off when I lock it and Wen I take the alarm off no honk or lights go off Wat can I do


holdboth the lock and unlosk buttons on your remote simultaneously for about five seconds until the lights flash and horn chirps.that should do it.if not i believe these models used a separate horn for security system.possibly fuse for this horn is bad or the horn itself is bad.to see if this horn works lower drivers window.stand outside vehicle and lock doors with remote.wait about a minute and reach in window and MANUALLY unlock and open door(do not use power door lock button)this should cause the system to activate...horn should beep and headlamps should flash.if horn beeps try my first suggestion.if it doesnt beep and just the head lamps flash check fuses and horn for security system.

Feb 21, 2011 | 1998 Nissan Altima

3 Answers

I need to disable my alarm on a 1997 bmw 528i.


Now im not sure since the manual says your model has the same alarm system as the 328i and on the 328i you can remove the module to disable by doing the following. you can unplug the control module. It is located under the glove box. Climb under the dash on the passenger side and remove a few screws on the trim panel under the glove box. Theres a black control module with a green connector. There should be a lock tab on the connector. press the lock tab and pull out the connector. The alarm should now be disabled. But if it has the special transponder key this may not work.
But if the only reason you want to disable it is because of the motion sensor setting of the alarm for no reason there is a solution for this. To disable the motion sensor, hit the lock button to arm, then hit lock button again within four seconds to disable motion sensor. Red light on rearview mirror should flash four times, then pause, then start flashing on regular intervals. this is most likely the reason if your having the issue where the alarm goes off every 20 minutes.
If you want to completely remove it below is a wiring diagram taken from the manual for you alarm system.
this is from the manual its the alarm wiring diagram.
Battery Constant 12v Positive Wire ( ): Red/White or RedBattery Constant 12v Positive Wire Location: Ignition Switch Harness
Starter Positive Wire ( ): Black/Yellow or Black
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire ( ): Green
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire ( ): Purple/White or Purple
Second Ignition Positive Wire Location: Ignition Switch Harness
Parking Light Positive Wire ( ): Gray/Purple and Gray/Yellow. Use Both Wires. This vehicle has a dual parking light system that will require 2 extra relays.
Parking Light Positive Wire Location: At Headlight Switch
Power Door Lock Positive Wire ( ): White/Red
Power Door Lock Positive Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Power Door Unlock Positive Wire ( ): Blue/Red
Power Door Unlock Positive Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Door Trigger Negative Wire (-): Brown/Gray
Door Trigger Negative Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Domelight Supervision Wire: Turns On With Unlock
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Brown/Red or Brown/Yellow
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Black
Tachometer Wire Negative Wire Location: At Instrument Cluster
Brake Light Positive Wire ( ): Blue/Red or Green/Red
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): Disarms With Factory Remote Only. Factory Alarm Disarm Wire Location: N/A
Factory Anti-Theft System: Transponder Anti-Theft System, Requires Bypass And Extra Ignition Key. The 1997 model year vehicle may require a bypass module and an extra ignition key, if vehicle is equipped with a special key from BMW.
Factory Anti-Theft System Location: Transponder At Ignition Switch Tumbler
if you require further assistance please let me know and i will help assist you from there. Thanks, Midwest-Tek

Aug 27, 2010 | 1997 BMW 328

2 Answers

Have a 1998 lincoln continental that has factory alarm. but i dont have a keypad. i would like 2 disarm it, it goes off for no reason.


if its an aftermarket alarm, which im sure it is, find the brain to the aftermarket alarm and unhook it. trace the brain back from the car alarm siren hardware. it shoud b mounted somewhere under the hood. theres not a lot of available space in the engine compartment. so you should easily find the siren hardware. trace the wiring back to the brain and disconnect it. it cant be factory alarm. factory alarm only goes off when u dont use keyless remote or key to unlock a locked door or trunk. factory alarm blows horn and blinks parking lights

May 26, 2010 | 1998 Lincoln Continental

1 Answer

My head lights keep flashing on and off all other light no problem check the bulb they are ok


Does the horn work? Sounds like the alarm system is going off. Does vehicle have an after market alarm system? If only has factory alarm try locking and unlocking the drivers door from the out side with the key.

Mar 08, 2010 | 2004 Dodge Durango

1 Answer

Kia rio key fob power lock/alarm problem


if the lights flash when you hit the panic button but the horn does not beep, then the alarm horn is bad. Vehicle has a second horn just for the alarm

Sep 16, 2009 | 2003 Kia Rio

1 Answer

How Can I Disconnect The Factory Alarm


because who ever changed the locks didn't replace the alarm harness on the back of the lockcylinder

May 20, 2009 | 2003 Nissan Xterra

1 Answer

Alarm system sounds off for no reason ('97 Lesabre Limited)


I had the same problem. The alarm system on my 1997 Le Sabre self-actuates. Luckily, it went off once when I popped the trunk. I went to Auto Zone and bought a generic trunk replacement lock. I noticed the original lock had a funky push-pull type of switch used to activate the alarm. This switch was likely hair-line on/off and when the temperature changed, it activated.

I went ahead and replaced the lock without the switch, but you can try simply unplugging the switch through the hole in the metal behind the lock to see if that might stop the alarm from arming itself (or cut the wire).

Good luck, it's a "hairy" problem.

Oct 29, 2008 | 1997 Buick LeSabre

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