I don't think Uncle Sam has that much influence over Pakistan.
Pakistani leadership--both civilians and military--are not 'puppets'. They may be insecure because of financial reasons but they are not puppets.
But, anyway, Pakistan equipping Turkey with nukes is a possibility. My understanding is both Dr. A.Q.Khan and General Aslam Baig wanted to equip Iran with nukes--Dr. Khan said that he wanted to 'deflect' attention from Pakistani nukes by doing so. And so, if Pakistanis perceive their Turkish 'brothers' to be blackmailed by Israeli nukes then they may--and probably will--throw caution to the wind and equip Turkey with nukes.
PS. All this topic is based upon basically a few sources. Much speculation. Turkish navy in 'Eastern Mediterrarian' in an 'aggressive' mode or providing 'escort' to the Gaza flotilla? Or, as @Gambit says a few pages above, Turkey is looking to save-face by some token gesture.