Sounds like the clutches in the torque converter.
That boot should just be a dust cover, unless its throwing oil all over your under side then I wouldn't worry, take a dab of grease and swipe it around in there if you can.What/where's the knuckle? Noticed the same noise on mine tonight. Took a ride on a creeper underneath while my wife idled up the driveway (yeah, I trust her and it's coming from where the driveshaft exits the transmission. The rubber boot is dry rotting and squeeking at low rpms........ Is this a failed seal and what does it take to replace?
"Jumps out of Reverse" is in fact an issue we had on some vehicles in 2007 MY. I will post a separate thread on this subject in case others are interested (and for more visibility).hey guys thanks for the help how much did it cost to replace the knuckle...do yall ever have an issue when you put the truck in reverse it starts to go then pops out of gear and you have to put it back in?