Question about 2002 Pontiac Grand Prix

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Security relay switch?

I have a 2002 GP SE. Recently, I have had sporadic trouble with it starting. When I turn the key, it won't turn over, even though everything works. It will do it two or three times, then start. I was told be a mechanic who tested the starting system that I had a bad relay in my security system. He also said it was a hard part to find. Does anyone know the part number so I can look for it myself? I want to make sure I get the right thing.

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  • Pontiac Master
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I have no idea what part the tech refers to.

Posted on Jun 28, 2017

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Posted on Jan 02, 2017

alicantecoli
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SOURCE: Dealer said ecm is bad. No communication. I let my

if you left the battery connected then YES its possible

Posted on Jun 22, 2009

  • 1 Answer

SOURCE: security light flashing while driving then suddenly wont start

flashing security light on and car wont sart

Posted on Aug 22, 2009

  • 205 Answers

SOURCE: 1993 pontiac bonneville se security light is

try turning the key on at leave it on till the security light goes off 10-15 minutes then turn the key off and back on and try starting it

Posted on Oct 20, 2009

  • 355 Answers

SOURCE: 1993 pontiac bonneville won't start when security light is on

Here is a detailed write-up on how to bypass the entire VATS security system yourself.
http://newrockies.ca/vatsbypass
This is what saved my car and my money (that I didn't have!).

Posted on Feb 02, 2010

  • 355 Answers

SOURCE: Possible security light problem on 1999 pontiac firebird...

if you have the chip in the key, then this will surely help you: http://newrockies.com/vatsbypass . It was the only thing that saved my car.

Posted on Mar 08, 2010

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2 Answers

1994 cadillac deville no crank


The PATS security system would prevent the engine from cranking if the system does not "see" the right chip in your key. If the system is working correctly, the light should go off after you turn the key switch on.
You should have power on the small starter wire when the key switch is in the start position.

May 02, 2013 | Cars & Trucks

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1998 Honda Accord Won't Start


Park neutral safety switch maybe be the reason for the no crank ! Try putting the vehicle in park ,then try to crank the engine . Testing the electrical circuit is the best way to trouble shoot this problem , along with do a voltage drop test on the starter circuit ! This will test the battery cables an connections .
Starter Voltage Drop
How to voltage drop test starter motor circuit
Does it have a manual or automatic transmission ? Manual ? clutch switch . Looking at a wiring diagram I also see a starter cut relay !
http://www.bbbind.com/free_tsb.html Free wiring diagrams . Enter vehicle info. year , make , model and engine size . Under system click engine , under subsystem click starting . Then click the search button , then click the blue link ! Check the starter cut relay also . Videos on youtube showing how to test a relay controlled circuit !

May 29, 2017 | 1998 Honda Accord

1 Answer

2002 gmc sierra won't start, security light came on


The security light is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterperates this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. Remember too, the TDM controls the security light. Sometimes you can have ALL the symptoms and no lights.
This link may help you.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Sep 15, 2012 | 2002 GMC Sierra

1 Answer

Truck stalled wouldn't start.


I can understand you being frustrated.
There really is no way to tell if the fuel pump was the problem at this point.
If the security system fails, you should see "security" light up on the cluster.
The key lock has a sensor that reads the chip in the key. If the sensor fails or the chip fails the computer won't let the vehicle start.
Most of the time when the security system is at fault, the vehicle won't start, but it won't cause the engine to stall.
You might want to have someone check the fuel pressure and spark at the plugs if you don't see the security light on the cluster.
Could be the fuel pump relay and a list of other things.
I would probably check the computer for trouble codes too.

Jul 21, 2012 | 1996 GMC Sierra

3 Answers

2009 HHR won't start. Battery is good.


Is the security light on or blinking?If not then do you have power to the starter.You can check this with a test light.You should have power when you turn the key to start.The test light should light up.Should be the small wire.I believe it is purple in color.If the security light is on then you will have to get the codes to see what is causing the no start.Hope this helps.Good luck.

Dec 07, 2011 | 2009 Chevrolet HHR

1 Answer

Pontiac grand am se 2002 won't turn over and


my pontiac did the same thing and all i had to do was replace the 40amp fuse. you can have someone turning the key while you hit the starter from underneath, if it starts then you need a new starter, if it dont then no, its something else. mine did the exact same thing and it was the 40amp fuse under the hod.

Oct 23, 2011 | 2002 Pontiac Grand Am

1 Answer

Hello I have a problem with my Pontiac 2002 Trans Am - Collector Edition. It does not want any more to start, there is the indicator SECURTITY which east lights, and since average making it...


Check the battery voltage with a multimeter. If the battery can't deliver a full 12 volts, the starter solenoid won't even activate. It may be that a cell went dead, causing a direct short inside the battery. Replace the battery if your battery is older than 3 years, or take it to an auto parts store to have it tested. The security light on is an issue many people have when the battery is low and the car won't start.

It is also possible that the security chip on the ignition key is worn. If it isn't making contact properly, the computer won't 'read' the resistor, and won't start. You will need to replace the key to see if this fixes the problem.

Aug 17, 2011 | 2002 Pontiac Firebird

1 Answer

Turn the key won't even turn over. Can get the car to turn over by pulling the starter relay and jumping it. Thinks its the security system.


yeah i'd agree. these give a lot of trouble with the ignition switch. usually have to replace the whole switch and have it programmed

Oct 24, 2009 | 2002 Pontiac Grand Am

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