Need help with a rear end suspension clunk..

MrOneEyedBoh · Apr 30, 2013

Well guys, I picked this truck not about 2-3 mths ago and the clunk as gotten worse but leveled out. I replaced all shocks this Saturday and its still there...

I get this clunk ish sound when I go over deep dips on the highway or go over speed bumps in parking lots. I can feel it on the seat and kinda in my feet. But Its definitely "behind" me feeling. As in the rear axle. I was thinking it was the cab mount loose ( truck only has 38k on it ) but what ever could it be? Any and all help is appreciated here fellas.

907DAVE · Apr 30, 2013

Things like a loose spare tire or worn out tailgate bushings can cause some of this.

Does the truck have a rear sway bar?

Viking · Apr 30, 2013

Is it exhaust hitting? Maybe got a broken hanger.

HeavyAssault · Apr 30, 2013

I second checking the exhaust.

MrOneEyedBoh · Apr 30, 2013

Just installed a new exhaust system hangers were good. I believe it does have a rear sway bar. I will check that. I want to say its almost right where the rear lear connects to the frame, drivers side, closest to the driver end ( not tailgate end )

TheRobenator · Apr 30, 2013

Check the u-joints and the yoke going into the differential as well as check the spare tire as said above.

MrOneEyedBoh · Apr 30, 2013

How would I check them? Just grab and yank?

littleredstroker · Apr 30, 2013

Spring bolt bushings ?

sent while looking at a hole in my block

Viking · May 1, 2013

For the pinion just grab the driveshaft and try to move it up and down like in the vid.

http://www.youtube.com/watch?v=RfGQjhIvAFo

MrOneEyedBoh · May 1, 2013

I know age doesnt mean much, but the truck is an 06 with 38k on it. So its not THAT old..

I will check those things. But it has to be suspension related as when I hit dips on the right side of the truck, nothing. I only hear it on the left side.