2005 GMC Safari Owner's Manual - Page 152

Setting the Time for Radios with the Set Button Press and release the SET button. Within five seconds, press and hold the left SEEK arrow until the correct hour appears on the display. Press and hold the right SEEK arrow until the correct minute appears on the display. AM-FM Radio Setting the Time for Radios with HR and MN Buttons Press and hold HR until the correct hour appears on the display. Press and hold MN until the correct minute appears on the display. To display the time with the ignition off, press RECALL, HR, or MN and the time will appear on the display for a few seconds. There is an initial two-second delay before the clock goes into the time-set mode. Playing the Radio Power: Turn the VOLUME knob to turn the system on and off. VOLUME: Turn this knob to increase or to decrease the volume. RECALL: Press this knob to switch the display between the radio station frequency and the time. When the ignition is off, press this knob to display the time. 3-42