Question about 2006 Hummer H3

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Won't start and the security light flashes. after about 10 min. it will start though.I think it is a problem with the security aspect of the H3 (2006)

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Definately security system will need a reader to figure it out

Posted on Nov 15, 2009

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Why does the battery/security light flashing in message center? Bad Passlock Ignition Sensor? How to diagnose bad Passlock Ignition Sensor? Have to perform 10min RELEARN PROSS. to start engine.


I read your problem, and I think Reliable-Store has the solution of your problem, Just visit the link I attached here, I'm sure you will get the solution of your problem forsure. Best Manuals

Mar 17, 2017 | Cars & Trucks

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2006 GMC Envoy car alarm goes off when I open doors or start engine. This happened after installing new battery. It had the same problem when I bought it in 2008. I forget how it was solved.


U need to reset security system (pass lock II). Turn key to on right b4 cranking but don't start and let security light flash for about 10-12 mins until it stops and then turn key back off, repeat procedure two more times don't actually turn key far enough to start during first two 10-12 min cycles, third cycle though after flashing stops turn the rest of the way forward for it to start. This should then reset security and solve problem sometimes only takes two cycles to reset. Good luck, hope this is helpful & solves problem.

Nov 23, 2013 | 2002 GMC Envoy

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Security light flashing and car will not start


i had tjis problem it is a security tking the car simply does not recognize your key thinks someone trying to steal solution turn key all the way to on as if starting let go wait 10 min when security light stops flashing and is steady turn key to off then restart note you have to wait the full 10 min if you dont car will not reset security and you will have to start over

Mar 25, 2013 | 2004 Pontiac Grand Am

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1997 Buick theft system light flashes won't start


Try turn key on car but not start for few min.Call dealer for alarms ask ththem.Or get online.

Aug 12, 2012 | 1997 Buick Skylark

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I have a 2001 Olds Intrigue that won't start every once in a while. When it won't start the security light flashes so GM told me it was the passcode and I would have to change the ignition switch...


you can not bypass the security in that car, it is built into the main computer, they have problems with the ignition switch screwing up and the only way to start it while the light flashes is to turn the key to ON but don't crank engine, leave on for 10 to 15 minutes until light goes out then start car.

Sep 21, 2011 | 1998 Oldsmobile Intrigue

1 Answer

Security light does not come on but will not start tried the 10 minute with ignition on still nothing. radio,locks & dome light still work & buzzer when door is opened bings.


If it was a security program problem the security light should flash. The 10 min thing is correct, except you have to turn the key enough to turn the starer for a second and then leave the key on in the run position without turning it off for 10 min. You may have to do this three times to program. Make sure you turn the key all the way off for about 15 sec in between each cycle though. It could be a bad passlock sensor also. Do you have any after market remote start or security systems on the vehicle? that could cause the problem also, if it is a security thing.

Apr 08, 2011 | 2004 Pontiac Grand Am

2 Answers

I just replaced the starter in my 2000 olds alero and now it wont start it keep flashing securty....it thinks it is benig stolen....how can I fix this


Most likely you replaced the starter because it wouldn't crank over. If this is correct and the security light was flashing before replacing the starter, then most likely you have a problem with the pass-lock system. If your ignition cylinder is located in the dashboard, you will need to remove it and replace the passlock housing.

Sep 27, 2010 | 2000 Oldsmobile Alero

3 Answers

Installed a new steering column now the security system has kicked in and the car wont start even though i have power


Turn key on for 10 mins. security light should flash for ten min. go off turn ignition off and back on repeat procedure 2 more times total of 30 mins should crank up

Aug 05, 2009 | 1994 Buick LeSabre

1 Answer

Prblem car won't start


Turn the key to on. The security ight should be flashing at this point. The key should be turned to on for about 10 mins. The security light will be steady now, the turn off then start it. This re-sets.

Jun 02, 2009 | 2002 Pontiac Grand Am

2 Answers

Security light flashes car cranks but won`t start any way to bypass security .


turn key on for 10 minutes until light stops flashing then try to crank car over

May 23, 2009 | 1999 Oldsmobile Alero

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