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2006 Chevrolet Malibu Maxx Question: How can I prevent the anti-theft system from engaging while vehicle car is off?

 

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gtownjohn, Germantown, WI, April 13, 2014, 06:02
 Rookie

Car is parked, engine & all accessories off for as long as 2 or 3 hours. Suddenly the horn will start blowing & the lights will begin flashing.

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    G. T. Service Center (4187 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG April 13, 2014, 06:57
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     Master

    The anti theft is part of the programming in the computer; There is something, probably due to weather conditions, causing the alarm to go off. A door ajar sensor could be faulty and showing open when it's not open. The only way to be sure is to unhook the battery until some diagnostics can be done. I have seen some under hood fuse boxes fail causing circuit issues, but without testing and duplicating the symptoms it would be hard to say what the cause is.

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    gtownjohn, April 13, 2014, 07:35
     Rookie

    Thank you.
    I have received a faulty "door ajar" message periodically.

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    ProfessorG, April 13, 2014, 08:57
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     Master

    That could be the issue.

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