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Gmc security system

The alarm system goes off randomly on its own on my 2013 GMC 2500 HD. I will be away from the car & key fob not in hand. Happening daily.

Posted by Anonymous on

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  • GMC Master
  • 260 Answers

I think i might know how to solve the issue... Check out this site he sells a module to bypass the security and that should help with it going off randomly. I know i used it in mine and i haven't had any issues since

Posted on Sep 04, 2015

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 208 Answers

SOURCE: The security alarm on my 1996 BMW 750iL goes on

2 most likely causes are: 1: a faulty hood switch.Check for the switch around the microfilter housings near the strut towers. 2: a faulty interior sensor. If you are sitting in the driver's seat. Look directly above your head in the center of the car. Pull the cover at the edges. You should see a sensor inside the cover. Unplug the sensor and retest your system.

Posted on Mar 10, 2009

  • 50 Answers

SOURCE: How do I program my remote control Fob for my 1997 Key Fob

1. Locate the Data Link Port. It is located under dash drivers side. Be sure you know which pins are 8 and 4.

(Notice port is wider on top row)
obd-1.jpg








2. Make sure there are metal contact pins in terminals 8 and 4. Connect 8 to 4 with a suitable
jumper wire (leave the jumper wire connected throughout the programming procedure). Make
sure you know which terminals are 8 and 4. The vehicle will respond by locking and unlocking the
doors to signify entering of programming mode.
3. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to be
programmed. After about 15 seconds, the vehicle will respond by locking and unlocking the doors.
Release the buttons on the transmitter.

4. Within one minute, repeat the previous step on the remaining transmitters to be programmed.
5. Remove jumper wire applied to the OBDII Port.

Posted on Mar 16, 2009

jyackle5
  • 8197 Answers

SOURCE: pairing new alarm fob to cobra 777

Turn ignition key on and off around 5 times or till you here the alarm then hit the left and right button on fob till you here the alarm again then it is set. if you have 2 remotes you need to do them both at the same time.

Posted on Apr 07, 2009

dancandoit
  • 436 Answers

SOURCE: I have a Mitsubishi FTO with a cobra car alarm

hold down both buttons on the remote till they stop flashing, then press left then press right, this will recode the remote to the alarm. if this dont work try new batteries, if not then find an engineer.

Posted on Jan 03, 2010

hfmiles
  • 1165 Answers

SOURCE: toyota camry 3000 1996 est. alarm set on car. fob

There should be a reset button or toggle switch under the dash on the driver side. If you don't find it, remove the driver side kick panel and see if it us under there. Once you find the button, or toggle switch, turn the ignition key to the on position, then push and hold the button for a few seconds, or flip the toggle switch, then try to start the car. If there is a blinking red light on the dash, this light should go from blinking to solid when the alarm has been reset. If this works, you can continue to use this method to start your car, but I would advise that you have the alarm replaced with an aftermarket unit, or removed completely.

Posted on Feb 07, 2011

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