2009 Buick Lacrosse, radio works but cannot see clock or station presets do not work

Click the clock button to the left of the cd slot and then turn the tuning knob to move it forward or back- then click the clock button again to do the minutes and move with tuning knob, then click clock button again to select either 12hour or 24 hour (military time- example 7pm=1900 hrs). the buttons with numbers on them are to save presets on the radio of your favorite stations- just push and hold the number you want it on after you have tuned it in with the tuning knob until it beeps and then it will be in the memory.

There is 2 different radios. With or without rds. Here are the instructions for both.
Setting the Time for Radios with Radio Data Systems (RDS) To set the hour, press the clock button. The clock symbol displays and the hour flashes. Turn the ADJ (adjust) knob to increase or to decrease the hours. To set the minutes, press the clock button again. The minutes. Turn the ADJ knob to increase or to decrease the minutes. The time can be set with the ignition on or off.
To synchronize the time with an FM station broadcasting Radio Data System (RDS) information, press and hold the clock button to enter the clock set mode, then press and hold the clock button for three seconds until UPDATED displays. If the time is not available from the station, NO UPDATE displays.
RDS time is broadcast once a minute. After tuning to an RDS broadcast station, it can take a few minutes for the time to update.
Setting the Time for Radios without Radio Data Systems (RDS) To set the hour, press the clock button. The clock symbol displays and the hour flashes. Turn the ADJ (adjust) knob to increase or to decrease the hours. To set the minutes, press the clock button again. The minutes flash. Turn the ADJ knob to increase or to decrease the minutes. The time can be set with the ignition on or off.

1. Connect the FM antenna and the AM loopantenna at the back of the unit. Rotate the AM loop for better reception.
2. Press AM/FM.
3. Tune a station by pressing TUNER+/-repeatedly until the desired station is found.Alternatively, you can press and hold thesame buttons down for about one second toactivate the automatic search function. Inthis mode the unit will automatically tunefrequencies until it finds a station.
4. Repeat step 3 to tune to another radio station.
5. Press AM/FMto select between FM and AM.Storing Radio Stations

The unit can store up to 40 radio stations (30 preset stations for FM and 10 preset stations for AM) in its memory. You can enter every single radio station yourself or the unit can store all available radio stations automatically in ascending order

Automatic Preset Programming
1. Press AM/FM to enter the AM/FM mode.
2. Press and hold AM/FM for two seconds to start automatic preset programming.
3. Radio frequencies will be browsed and radiostations stored automatically. When all the available radio stations are stored or all 40(30 preset stations for FM and 10 preset stations for AM) memory locations are full,the auto preset programming function will stop.

Manual Preset
1. Tune to a radio station (see "Manual tuning"for details).
2. Press MEMORY. While the Program Preset number is still flashing, input your desired preset number using the numeric buttons or press CH+/-, then press MEMORY to store it.

Retrieving Preset Stations
1. Press AM/FM to enter the Tuner mode.
2. Press CH +/- to search up or down for thepreset stations or directly press the numeric buttons.

Without Radio Data Systems (RDS): To set the hour, press the clock button. The clock symbol will appear on the display and the hour number will flash. Then turn the ADJ knob to increase or todecrease. To set the minutes, press the clock button again. The minute numbers will flash. Then turn the ADJ knob to increase or to decrease. The time can be set with the ignition on or off.
With RDS: Same as without RDS unless you want to Sync. with a radio station. To synchronize the time with an FM station broadcasting Radio Data System (RDS) information, press and hold the clock button to enter the clock set mode, then press and hold the clock button for three seconds until UPDATED appears on the display. If the time is not available from the station, NO UPDATE will appear on the display. RDS time is broadcast once a minute. After tuning to an RDS broadcast station, it may take a few minutes for the time to update

To set the hour, press the CLOCK button. The clock symbol displays and the hour flashes. Turn the ADJ (adjust) knob to increase or to decrease the hours. To set the minutes, press the CLOCK button again. The minutes flash. Turn the ADJ knob to increase or to decrease the minutes. The time can be set with the ignition on or off.
To synchronize the time with an FM station broadcasting Radio Data System (RDS) information, press and hold the clock button to enter the clock set mode, then press and hold the clock button for three seconds until UPDATED displays. If the time is not available from the station, NO UPDATE displays.
RDS time is broadcast once a minute. After tuning to an RDS broadcast station, it can take a few minutes for the time to update.

Station Pre Set:
You can save 4 pre sets on this radio (1-4) tune the radio to the station you want to save then PUSH and HOLD one of the pre set butons until the sound returns, the station is saved to that pre set. Repeat for the 3 presets.

Clock:
Hour: Push and hold the CLK button and at the same time push the SEEK button to adjust. < decrease hours > increase hours.
Minute: Push and hold the CLK button and at the same time push the TUNE button the adjust. < decrease minutes > increase minutes.

Check your grounds.

Tune to a desired station, choose a preset button and slowly and lightly press it until the display blinks once (you may hear a beep) and the station remains tuned. I always need to do this with the vehicle stopped.

Holding the button is supposed to work. This from owner's manual: PRESETTING A STATION:

1. Tune in the desired station.
2. Push one of the station selector buttons (1-6) and hold it until a beep is heard. This sets the station to the button and the button number (1-6) appears on the display.

Each button can store one AM station and two FM stations. To change the preset station to a different one, follow the same procedure. The preset station memory is cancelled when the power source is interrupted by battery disconnection or a blown fuse.

Try just holding the button of choice down. In my Audi, when I had a factory head unit, to set for example, preset 2, I'd just tune to the station I wanted to program, and then hold down the number 2 preset button until the display stopped blinking. It was then preset.