1997 GMC Sonoma Owner's Manual - Page 120

Audio Systems Your Delco@ audio system has been designed to operate easily and give years of listening pleasure. You will get the most enjoyment out of it if you acquaint yourself with it first. Find out what your Delco system can do and how to operate all its controls, tobe sure you're getting the most out of the advanced engineering that went into it. AM-FM Stereo Setting the Clock Press SET. Within five seconds, press and hold SEEK until the correct minute appears on the display. Press and hold SCAN until the correct hour appears on the display. Setting the Clockfor AM-FM Stereo with Compact Disc Player and Automatic Tone Control Press and hold HR until the correct hour appears on the display. Press and hold MIN until the correct minute appears on the display. To display the clock with the ignition off, press RECALL and the time will be displayed for a few seconds. There is an initial two-second delay before the clock goes into the time-set mode. Playing the Radio PWR-VOL: This knob turns the system on and off and controls the volume. To increase volume, turn the knob clockwise. Turn it counterclockwise to decrease volume. RECALL: Display the time with the ignition off by pressing this knob. When the radio is playing, press this knob to recall the station frequency. 3-6