2002 F-150, when I accelerate there is a squeaking noise like something isn't greased properly, once I hit about 30-40pmh it goes away and nothing during braking. Its been getting worse so I stopped driving it. Are my u-joints shot? Do I need to lube something up? Any help would be greatly appreciated

 

I would check your U-joints first for any play. If you do have to replace them, when you have the drive shaft off, make sure and lubricate the slip yoke with Motorcraft PTFE Lubricant. When was the last rear differential fluid change?

 

I had it done twice over the last year, it seems like every oil change they tell me its bad. I dont understand why that always happens or maybe I'm getting shafted. How difficult is the U-joint replacement, I'm somewhat mechanical

 

as funny as it sounds try some wd-40 on the tailgate hinges i have a 2002 lariat and ford had truck for 3 weeks and couldnt figure it out , then my buddy said oh i used to have same problem , told me remedy , poof problem gone ford replaced 3000.00 bucks worth of stuff for free as it was still under warrenty!!!! i didnt tell them what fix was