Driveline clunk, slop, and noise. Solved.

[rascole]

For the last 6+ months, I've had some driveline noise that I never was able to find and figured it was the TC chain slop. At rest, everything felt solid except the TC. The noise was more of a hard clunk when I would shift, accelerate, or off-roading. I am in the middle of modifying my trans crossmember to accept the modified Rancho trailing arms and new skid plate. When I supported the trans to take the crossmember out I noticed a good quarter inch movement up but I figured it was the bushing slop, the bushing is only 2 years old and in great shape. The 2 bolts that hold the bushing to the trans where 3+ turns backed out, at least quarter inch gap as evidence of some Moab red dirt between the mount and trans. Took them out, cleaned the threads and some medium thread lock and torqued them to 37 ft/lbs and the clunk was GONE. So if anyone else has a mystery driveline clunk, check your trans crossmember bushing and bolts.

 

[Bruces]

Hmmm. Maybe my phantom clunk. Thanks i will check mine.

 

[Happy Hummer]

Thanks for the heads up.

 

[alrock]

Nice fix!

 

[Lewiz VenomH3]

I have a 07 h3 adventure. I only notice the clunk noise when I take a left turn. Also when I shift from park to drive or drive to reverse. After I replaced my front differential bushing it seemed to quite down some what

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