1999 GMC Jimmy Rearend vibration above 50mph

Tiny
TODDFISHN
  • MEMBER
  • 1999 GMC JIMMY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
I just recently swapped out my jimmy's rearend with used one after trashing the original one. Problem is that above 50mph I get a thumping type vibration that will get worse the faster I drive! Is this possibly a pinion bearing problem? I hope! I forgot to check it when I replaced it because it was 35 degrees outand just wanted to get it in. I pulled the wheels and ran it up to 55mph on jacks and it does the same thing. Help!
Do you
have the same problem?
Yes
No
Tuesday, March 24th, 2009 AT 9:21 PM

1 Reply

Tiny
BMRFIXIT
  • EXPERT
Also check drive shaft and u joints
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2009 AT 8:44 PM

Please login or register to post a reply.

Recommended Guides