1999 Chevy Suburban rear end klunk sound

Tiny
DILLONPRO
  • MEMBER
  • 1999 CHEVROLET TRUCK
I recently bought a 1999 Chevy Suburban K1500 LT 5.7L 4x4 66,000miles. Probably half the time when coming to a stop, when I pull out there is a clunk sound coming from the rear of the vehicle. It's just one klunk and then everything is fine until I come to another stop. I suspected a bad u joint and had the mechanic at the Chevy dealer check it and he said it was in good shape and that the sound I'm hearing is normal for Suburbans and Tahoes as the rear end is syncronizing with the transfer case. I have several friends with similar Subrubans and have never heard this sound when riding with them but they certainly hear it when riiding with me. I recently got back from a 1700 mile trip and several times the klunk sound was much louder and one time it klunked so loud and hard I thought I may have a transmission laying on the ground. Always after the initial klunk it drives just fine. A friend of mine said it sounds like a bad yoke. Is replaceing the yoke an expensive procedure? Any ideas?
Saturday, March 3rd, 2007 AT 1:39 PM

5 Replies

Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Actually it sounds like it could be spider gears in the differential, removal of the diff cover would be required to check, you may be able to jack the rear up, in neutral and spin the tires and possibly hear the noise, if you need help if you want to pull the cover let me know, I will guide you through it its easy

jim
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Saturday, March 3rd, 2007 AT 1:57 PM
Tiny
DILLONPRO
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  • 3 POSTS
Thanks for the info, I have never worked on a differential, I probably should leave this one to the pros.
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Saturday, March 3rd, 2007 AT 8:12 PM
Tiny
JKROBIN3
  • MEMBER
  • 3 POSTS
Did you ever find out exactly what the problem was?

I have the same thing happening.
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Thursday, September 27th, 2007 AT 1:04 PM
Tiny
DILLONPRO
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  • 3 POSTS
NO, I have just been living with it but I do need to get it checked out before it breaks down.
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Thursday, September 27th, 2007 AT 9:15 PM
Tiny
JKROBIN3
  • MEMBER
  • 3 POSTS
If you find out what the problem is please let me know. I'll do the same.

I'm just living w/ it right now too. :-(
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Thursday, October 18th, 2007 AT 5:41 PM

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