Question about 2002 Chevrolet TrailBlazer

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When i turn the ignition key in my 2002 trailblazer all the lights will light up, but the truck will not start. the security light come on. i was told it may be the anti theft that is disabling my truck.

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  • 197 Answers

This seem to be a comand problem with GM.
Here's how to fix it.Put key in switch leave switched on 15 min. then switch off then crank the vehicle,you should be good to go. Let me know if it works.

Posted on Jun 03, 2010

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Is there a light that says "security" on the dash when this happens? If so, check out this link. This is an all too common problem on GM vehicles. http://vatspasslockpasskeysecurityhelp.yolasite.com/

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http://vatspasslockpasskeysecurityhelp.yolasite.com/ TRAILBLAZER 2002 2003 2004 2005 2006 2007 2008 Effected by Passlock/PASSkey Failure. tayjoejoe_17.jpg

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Won't start


very well could be due to anti theft issue. i don't recall the keys getting locked in the ignition from this though. try turning the key to the on postion- not cranking and leave it there for 15 min, then turn back off. do this three times. you may get a blinking light on the dash- don't worry about it. on the fourth try and start it. what you are doing is telling the alarm- i have the proper keys so let me take my car!

Aug 25, 2009 | 2002 Chevrolet TrailBlazer

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02 chevy trailblazer 4.2l car wont start installed new starter still wont crank or start test fuses all are good lights and horn operate but no start could it be the ignition switch not giving power to the...


You need to establish that you have 12v in the battery and that all connections are clean and secure. Lights horn etc do not give you voltage verification...your starter uses more amperage than anything else in the car. Once you are certain that everything is OK, check for 12v at the small wire on the starter with the key turned to start. If no volts, check the neutral safety switch or clutch switch Then check ignition switch for power in/out.

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There is a small 1/4'' oblong cover plate on the underside of the stearing column. Pop this out and there is a button you push in ( like the Crysler key relase) and this will allow you to remove the key.

Dec 22, 2008 | 2002 Chevrolet TrailBlazer

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