help

[wannabelow]

i have a jvc touch screan deck 2 rockford p2 12 2 rockford 6x9 and a rock ford amp cant rember the modle i have had this in for a couple years now and i just started to get noise will more of a high piched buzzing when the truck is running when you step on the gas it get louder but you can turn it up to drown it out and i can hit the top of the dash and it will stop for a sec or push the deck further back in the dash and it will go away for a sec then comes back


i was thinking a bad ground on the deck. i have had it in once all ready to have it fixed and they just put a new face plate on it


any help with this is great

thanks scott