Recently I picked up a 2002 F150 from my boss the rear end started making a clanging noise which turn to a loud grinding noise I noticed passenger side was leaking gear oil I check the differential and it seem like no oil in there I took it to a shop to get an estimate and it was way too high all they did was look at the tag and get information when we went to Crank It Up it won't crank theft light was flashing and giving me code 16 so I need some help what can I do about the Anti-Theft and what are all the parts I need to order to rebuild the rear end 8.8 with 355 gears I believe

 

I'd swap a complete used rear in and call it a day. As for the other I have no idea

 

I decided to get a complete rear end someone is selling from a parts truck but I'm lost with this PATS system and code 16? Really need help can't work on it till I can get it to crank an bring back to my garage

 

A quick google brought this up
http://www.f150online.com/forums/ele...ence-pats.html