Its been along time.. I bought a truck awhile ago from a dealership with a kenwwod kvt910dvd already installed .. well the battery went dead i replaced the battery and no the deck wqants some kind of 4 digit code.. what to do now?? any ideas

 

sent it to kenwwod
or phone there phone # and ask them

 

I would take it back to were you bought the truck and have them replace the stereo if they cannot come up with the code.
If warranty or whatever is up and it is not a STOLEN deck i would try kenwood.