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2002 Silverado 2500HD 6.6 335,000 Miles

Randy Ingle

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Randy Ingle Enthusiast

Randy Ingle

Posted
Posted

When I come to a stop and then release the brake pad there is a significant bump.  U-Joints are good.  Anyone have an idea as to what is causing this problem? Sure would like some input.

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

When this happened on my 2002 1500 it was the slip yoke.  The dealer replaced it with a nickel coated slip yoke and all has been good since.  This was at 15k miles and now has 197k.

txab Senior Enthusiast

txab

Posted
Posted

As stated, more than likely the slip yoke sticking then releasing. You can also lubricate the splines

Colossus Senior Enthusiast

Colossus

Posted
Posted
5 hours ago, Black02Silverado said:

When this happened on my 2002 1500 it was the slip yoke.  The dealer replaced it with a nickel coated slip yoke and all has been good since.  This was at 15k miles and now has 197k.

Heh.  Remember back in the day on here when this was the most common complaint?  

Randy Ingle Enthusiast

Randy Ingle

Posted
  • Author
Posted
18 hours ago, Black02Silverado said:

When this happened on my 2002 1500 it was the slip yoke.  The dealer replaced it with a nickel coated slip yoke and all has been good since.  This was at 15k miles and now has 197k.

Your 1500 is much different than my 2500HD 4 wheel drive.  But thanks anyway.

txab Senior Enthusiast

txab

Posted
Posted

You've still got a yoke with splines at the trans, that's where the stick/slip can occur. At least look into it...... since I had a 4wd that had the issue.

 

It's been described by some as if they were bumped from behind by another vehicle

 

If it's not the issue then move on to other things.

onebohemian Enthusiast

onebohemian

Posted
Posted

I had a 03 1500HD that started doing the rear bang at around 215000.  I ended up selling it before I definitely fixed the source of the clunk, but in the process of trying to figure it out, I came to believe it was in the leaf springs—not the yoke.  There is a post either on this forum or the silveradosierra in which a guy bought some $30 u-bolts from local auto store and placed them just beyond the factory ubolts on the leafs.  It fixed his thudding, and others there commented it worked for them too.  IIRC, his bottom leaf spring was slightly askew of the top two, but they straightened out with the additional u-bolt.  My 03’s springs were like that too, which is why I believe that had I added the extra u-bolts, mine clunk would have been gone too.  For $30, what have you got to lose?  I will try to find that other forum thread for you.  

onebohemian Enthusiast

onebohemian

Posted
Posted

Here is the link to other forum’s (gmfullsize) post on this.  Topic started as question about yoke clunk but included excellent info on leaf spring clunk fix.  See in particular post 35 in that thread, which shows great pics of that guy’s issue that you could compare yours too, but there are other posts in that thread discussing as well.  

 

https://www.gmfullsize.com/threads/gm-yoke-clunk.239570/

 

Good luck,

Mark

Mpls, MN

Randy Ingle Enthusiast

Randy Ingle

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On 4/20/2020 at 4:14 PM, Black02Silverado said:

When this happened on my 2002 1500 it was the slip yoke.  The dealer replaced it with a nickel coated slip yoke and all has been good since.  This was at 15k miles and now has 197k.

Thanks that is the first thing I will ask my mechanic to check.

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