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Old 09-30-2012, 02:51 PM   #1
Boog
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Join Date: Mar 2001
Location: Searcy, Ark. USA
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rear end clunk

I have what can be described as a "clunk" in the 06 GMC. Happens only on the 1-2 shift. Feels like it's from the rear end. There is no gear whine or howl however. The truck has the 5.3, auto w/od, 4.10 gear with gov lock with 110,000 miles on it. I haven't looked at the ujoints yet. Any ideas?
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.

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Old 09-30-2012, 06:36 PM   #2
clinebarger
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Re: rear end clunk

Quote:
Originally Posted by Boog View Post
I have what can be described as a "clunk" in the 06 GMC. Happens only on the 1-2 shift. Feels like it's from the rear end. There is no gear whine or howl however. The truck has the 5.3, auto w/od, 4.10 gear with gov lock with 110,000 miles on it. I haven't looked at the ujoints yet. Any ideas?
Remove the driveshaft & lube the internal splines on the slip yoke....Retest.
Get back to me on what you find.

Inspect the U-loints while the driveshaft is out.
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