Rear end clunking

Tiny
TALLKOOL1
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 185,000 MILES
Went over rail road crossing at low speed an a clunking sound started coming from rear of truck. I pulled over an saw nothing was hanging down. Started to pull off an clunk clunk clunk. Sound is more prevalent in reverse. Got towed to a buddy's and jacked it up grabbed driveshaft an twisted. It had lots movement so I replaced u-joint at tail end of shaft that goes to rear end. Pulled out drive an was not much different. The spline that goes in trans was dry and I did not put anything on it. Any suggestions are appreciated. My truck is a z71.
Thursday, November 15th, 2018 AT 6:09 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning

The first thing I would do is remove the rear cover from the differential and inspect the inside for any damage. You may have damaged the gears internally.

Look for any debris in the differential as well.

Roy
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Friday, November 16th, 2018 AT 5:07 AM
Tiny
TALLKOOL1
  • MEMBER
  • 2 POSTS
Thanks I will do that.
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Friday, November 16th, 2018 AT 10:50 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
You are welcome.

Always glad to help.

Keep us updated with your findings.

Roy
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Friday, November 16th, 2018 AT 11:08 AM

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