Yes, there are Sinnoh Pokémon HeartGold and SoulSilver. Kricketot, Buneary, Shinx, Luxio, Budew, Buizel, Floatzel, Chingling, Bronzor, Bronzong, Chatot, Carnivine, Pachirisu, Riolu, Skorupi, Hippopotas, Gible and Croagunk are all available in the wild in both HeartGold and SoulSilver.
You cannot go to the Sinnoh region in "Pokémon HeartGold" and "Pokémon SoulSilver."
Pokemon HeartGold Will Have Sinnoh,Kanto,But Hoenn Least Likely.
I think your talking about HeartGold/SoulSilver. In Pokemon HeartGold/SoulSilver you're not capable of going to the Sinnoh region, only Jhoto and Kanto are avaliable.
No Sinnoh Pokemon can be found in HeartGold or SoulSilver, but you can choose just one of the Hoenn Pokemon after doing certain things (either Torchic, Mudkip, or Treecko).
No, you won't be able to acquire a Sinnoh Starter in Pokémon HeartGold and SoulSilver, you'll have to trade for any of the Sinnoh Starters.
No but you can go to kanto but you can own sinnoh pokemon.you cant
You can not. It is impossible for Heartgold and Soulsilver.
Just Johto and Kanto.
There is no Sinnoh to unlock in either game. If you want to access Sinnoh, you must buy Pokemon Diamond, Pearl, or Platinum Versions.
Not in Heartgold/Soulsilver.
no i am afraid you cannot.
No, but if you get Platinum or Diamond + Pearl, you can trade across Sinnoh Pokemon. I traded across a STARLY to SoulSilver and it worked. So it should be fine.