Setting the Clock

Delco(R) AM/FM Stereo With Clock:

To set the clock, the ignition switch must be in the ACC or ON position, but the radio can be on or off. To set the hour, press and hold RCL (TIME SET). At the same time, press and hold
To set the minutes, press and hold RCL (TIME SET). At the same time, press and hold TUNE> (MIN) until the correct minute appears.