One problem related to horn assembly has been reported for the 2008 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Tahoe based on all problems reported for the 2008 Tahoe.
Turn vehicle ignition off take the key out of the ignition, open the driver door to get outi get a few dings like I have left the key in the ignition. I close the driver door, the lights flash, horn honks and doors then lock. I have done nothing to make this happen. It is an intermittent problem. The two local chevy dealers cannot make it repeat this issue and because there are no codes that come up, they tell me they can't fix it. The second issue is my turn signals. I turn on a turn signal, it shows up green, it does not click at random times. Third issue, windshield wipers turn on with the fluids when I have the switch in the off position. I touch nothing. I have asked the dealer if they have seen any of these issues and they said they have ran the service bulletins and cannot find anything. So I have a $50k vehicle that has electrical issues that they do not want to look into because they cannot find a "code".