Question about 2002 Chevrolet Avalanche

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Security alarm 2002 1500 avalanche security light stays on sometimes when i am driving shut truck off and sometimes will not start for ten minutes will not turn over then will turn over but will not start and then after a while will start

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Could be a few things,ignition switch,pass lock sensor.have it scanned and that should point you in the right direction,whatever you replace...the theft system will have to be relearned,that takes 30 minutes to do in your driveway or ten minutes at a reputable shop,google the relearn process..pretty easy,hope this helps

Posted on Nov 27, 2012

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Dealer only ,expensive repair

Posted on Jan 23, 2009

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2 Answers

Security light flash no security system on truck


sometimes turning the ignition on 3 times quickly without starting will reset the computer. If the van has power locks and keyless entry then try using only the keyless entry. Sometimes your car wont have a alarm but an anti theft device which will not allow it to start if it goes off or something triggers it.

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Car will now work or start


It looks like you have a problem with the alarm system. Try disconnecting the battery cable for ten minutes or so.
Before unplugging battery, ensure you have your car radio security code, should be in car documentation, you may be asked for the code on restart, if you lost it the stereo won't work.

If you still have the problem go back to car dealer and have alarm system checked.

If alarm system is ok or not present, what iremains is a possible wiring contact, that is quite unusuallly related to door lock.

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