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When you turn the ignition, Tahoe trys to start, but cuts out. Security light flashes. The security system opens and lock doors and is connected to the horn. How do we get this car to start?
We could not reset by holding the lock and unlock buttons at the same time for 7 seconds, nothing happened with the door locks. New battery replaced in remote unit.
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Here's what I do that works for me: put the key in and turn it to the accessory position, but don't start the car. Wait about 12 minutes. Start the car - it should work. (Sometimes I put the parking brake on to kill the headlights and prevent unnecessary drain on my battery while the key is in the ignition.)
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∙ 12y ago
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