[HayZee518]

See if you can find out exactly where or rather what area causes the squeek. The squeek could be caused by the boards moving past each other or the board(s) nails are loose. Most t&g boards are edge nailed at an angle to the tongue to the subfloor. Once you find the area - use a long 2" finishing nail, hammer it down flush then use a nailset to set it below the surface. Use a compatible filler to cover the nail head.