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To Any Gm Techs Or Anyone Who Knows About The Axle Free Play Making Ba

usmc3529

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usmc3529 Enthusiast

usmc3529

Posted
Posted

if anyone can help on this issue i would appreciate it. I read another thread from awhile back here about a constant clunk in the rear of the truck over uneven/rough roads and the issue was excessive free play in the floating axle. my truck is a 2007 silverado 1500 2wd.

 

I have had this clunk for a while now and it has gotten worse. I took off my spare tire and my gas tank shield and tonneau cover and sure enough the noise is still there, i just put on a 6 inch bds full suspension lift and figured since it came with new shocks and leafs and bushings that may remedy it, nope. well I rock the wheels on either side while the truck is on the ground and clunk clunk clunk!!!!!!! There is NO WAY this is acceptable free play, my truck didnt do this before and I have never been off road. I am running 285/65 18 rear tires and have drum brakes in the rear.

 

I have brand new leaf springs etc so I know the issue lies directly with the axle, is there a remedy? The whole rear end is covered under the 100k warranty so was just curious to what the fix might be. Thanks!

Dooner Enthusiast

Dooner

Posted
Posted

Did you check your U-joint? Did the lift come with shims to correct the angle of the driveshaft? I'd probably start there. Try placing suitable jack stands under the rear axle, throwing the truck in neutral, and free-wheeling the rear tires by hand. Your warranty may be void due to the lift, not sure.

bbb Enthusiast

bbb

Posted
Posted

try rocking some other trucks...most do that.

usmc3529 Enthusiast

usmc3529

Posted
  • Author
Posted

the drive shaft and u joints are fine. On a 2wd truck the 6 inch bds lift is bolt on, alignment and go, no modifications except for drilling a new hole in the lower control arm for the link. This lift does not throw of the driveshaft/pinion angle.

 

The noise is pin pointed at the rear axle. I have shook the other trucks and they are supposed to have some play but not this much.

 

PS. Adding a lift does NOT void your powertrain warranty. It would only void a component such as ball joints or tie rod ends but the dealer does have to prove the lift caused the pre mature wear . I went straight to gm before I put on my lift and verified with them about the warranty coverage

 

Just wanting to know if there are any gm techs out there who have found a resolution or fix for this? Thanks!

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