I have a 2003 Chevy tahoe. An when I turn off the ignition switch.Sometimes the radio an dash lights don't cut off
I have both a 2004 and 2005 GM vehicle. The lights stay on, both driving and the interior light comes on also, and the radio stays on after turning off the switch for a few minutes. I believe there is a knob or switch or even a command that regulates the time after the ignition switch is turned off. If you have a manual, look and see if you have such a feature.
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