Hey I have a 2004 F150 SCREW with 6inch procomp suspension lift, for some reason when I put the truck in reverse it starts squeaking up a storm and i cant figure out what it is, i tried cleaning the leaf springs from dirt but it still continues to squeak, any one got any ideas

 

Check your u-joints on the rear drive shaft, thats typically the cause of this problem.

 

i checked them last night they seemed fine maybe i'll just replace them any way I dont think in the past 80K they were replaced so maybe i'll do that thanks for the info

 

so i figured out what the problem was it was my rear shocks didnt expect that, it was not the u joints in the drive shaft

 

I had a mysterious squeak when I did mine. I only noticed it when I was backing up because I was going slow. It turned out to be the front axle rubbing on the heat shield. I never bent it back. It's never what you expect...