Clock Radio

HELP! I bought a 2002 Montana with no owners manual and I can't figure out how to change the clock on the factory installed radio/cd player. Any help would be greatly appreciated. Thanks

you can chnage clock simply by pressing on H and M. by pressing down it will beep and up.

Thank you, I tried that and I was able to change the hour and the minutes but they just stay at whatever time you put them on. I can't seem to get it back into clock mode once it beeps