Question about Car Speakers & Subwoofers
Most GM factory head units have two small buttons on the face of the unit that are labeled "H" and "M", and you need to press them with the tip of a pin or other similar item.
Press the "H" button for changing the Hours, and the "M" button for minutes
Posted on Dec 09, 2008
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Refer to the section of your owner's manual that addresses the car radio. Each car radio is different in the way you set the clock. If you've installed a car radio other than the one that was manufactured with the car, consult the manual for that radio.
Know that if this is the first time you're setting the clock or are setting the clock after installing a new battery in your car, you have to set the hour and the minute of time. Often, you set the clock with either the radio station up or down arrows. On some car stereos, you use the CD track selector buttons for setting the clock.
Using either the CD or radio selector buttons, set the hour first. Push the button labeled "Set" or "Clock" and then set the minute with the same procedure. When setting the minute, some manufacturers allow you to move through in increments of five by pressing and holding the button. If the time of day were 2:49 p.m., for example, you would push the button 13 times, including nine times to display :45, then four additional times incremented by one to display :49. Push the "Set" button or the "Clock" button.
Determine whether your car stereo is equipped to automatically change when Daylight Saving Time begins and ends. If it hasn't changed at 2 a.m. of the time-changing date, you know it isn't equipped for this. In that case, set the hour either forward or backward and the appropriate time of the year.
If you can't figure out how to set the clock on your car stereo, wait until noon on any given day, disconnect your car battery and reconnect it.
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