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My security light came on ,on my 2003 Chevy 2500HD truck causing the truck not to start. Does anyone know how to reset the alarm for it to go off?

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  • Cars & Trucks Master
  • 5,370 Answers

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.


To troubleshoot these types of problems. I suggest going through these link.


Click the link below: ------


http://alltypesofpartsreplacing.blogspot.com/2012/11/factory-alarmsecurity-system-alarmcar.html

--------

These will help.

Thanks.


Posted on Dec 06, 2012

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Posted on Jan 02, 2017

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SOURCE: 2001 Chevy 2500HD 6.0L, Hard starting.

Check the fuel pressure, bad fuel pump or sock on the fuel pump and fuel filter check spark plugs and check distributor cap, a fuel pump is $273.00 or a bad injector $110.99 or BWD Fuel Vapor Pressure Sensor for $35.99 any of these parts could cause the problem, so without doing a fuel pressure test it is a guess, if the vapor switch is bad it could cause a long crank time if the fuel pump is bad it has a check valve in the fuel pump, if the check valve goes bad the pump can't maintain fuel pressure so on start up the fuel has to pump from the tank all the way up to the fuel rail, if the injectors is bad it could leak after engine shut down and cause you to lose fuel rail pressure. Also the fuel vapor sensor could be stuck open and could cause the problem, all need to be tested, you can rent the fuel pressure tester from AutoZone or advance auto or Shucks they return your money when you bring the tool back as long as you buy the parts to repair it from them. That would be the first thing I would check fuel pump pressure and if you replace the pump then change the fuel sock as well. That model was not meant to burn ethanol and can kill the fuel sock the fuel pump and filter.

Posted on Jul 04, 2009

  • 574 Answers

SOURCE: security light blinks on dash , truck wont even try to start

Does your key have a chip on it? If it does its probably the problem

Posted on Aug 23, 2009

  • 1 Answer

SOURCE: Security light flashing, 2003 RAM will not start or reset

i had the same exact problem...reading thru other listings of the same problem i came across one solution that worked for me.....by holding the trip odometer reset button down and holding it in while turning the ignition switch to the on position ...all lights on dash will light up and the tach and speedometer gauges will make a full sweep the back down codes come up in the window ..turn ignition switch on and off and reset something , everthing ,....anyway my truck starts again ...thanks for the solution to my problem !

Posted on Aug 23, 2009

  • 104 Answers

SOURCE: I have a 2003 Chevy Silverado 2500HD. When I

heated seat eliment needs replaced. or unplog

Posted on Apr 01, 2010

cool78259
  • 228 Answers

SOURCE: my 2005 chvey 2500hd diesel truck will not start,

on the back of the engine close to the firewall by the glow plug controller is a high pressure oil switch. if this switch goes out diesel fuel will not reach the injector pump.try pulling the molex and jumping it out with a wire. if it starts. replace the switch. it takes an extra deep socket designed for that switch that can be purchased at any auto supply. good luck!

Posted on Jul 26, 2010

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