How do you get Snorlax to move in Pokemon HeartGold?
if u want to move the snorlax, u have to fix the problem t the power plant, then go to the radio station in lavender town and talk to a man and upgrade your radio (or pokegear). Then walk up to the snorlax and open your pokegear, move the tuner around the top and find the poke flute, then talk to the snorlax. you should probably save before battling the snorlax.
Imran: Yes Snorlax can learn giga impact. When I caught the Snorlax Lvl50 that was sleeping in front of Digletts Cave it knew Giga Impact in Pokemon Heartgold and Soul Silver. I do not know about other pokemon games in which you can catch Snorlax that they would know Giga Impact or not. But of course you can teach Snorlax Giga Impact with a TM. So, yes Snorlax can learn Giga Impact.
You must go to Lavender town and go into the radio tower and talk to the man in brown. He will install Kanto Radio in your Pokegear. Go to Snorlax. You must manually tune it,it's near the top. Exit,and press A on Snorlax(or it will automaticaly wake him up,can't remember.)And you will battle it and once caught or defeated you can pass.