Driveshaft Question
 

I have a 2001 Silverado with 150k miles on it. Squeaking noise from rear of truck first thing in morning. Found my rear u-joint was bad. While I was down there, I moved the driveshaft back and forth while in park and found my clunking noise when ever I put my truck in gear. I've had this for about 50k. It seems to be inside the driveshaft. Does anyone know is this normal, fixable or do I replace the driveshaft as an assembly?

The splines were the tailshaft and the driveshaft match up is a common cause for popping or binding on the trucks from what I hear. Pull the driveshaft and put some greese on the splines and re-instal the driveshaft. As far as U-joints replace all of tehm as a unit. From my experience once one goes the others will follow. And get U-joints with greese zerts for future greesing.

all good info!

Well I ended up buying a new rear ujoint for mine the other day because when I pulled the drive shaft the other day to replace the transmission seal, I broke one of those little C clips

You know the things I'm talking about that are about a millimeter thick and allign the shaft so it fits in the recepticle correctly... I put it back on with one but I'm not one to trust it so I'll replace it soon.

U joints aren't expensive at all. Bought one with a grease fitting for $9.99

Thank you for the input. This will be my Saturday morning project.