| [GMCnet] Front end "Rumble" ??? [message #70258] |
Sat, 09 January 2010 18:40  |
Bruce
Messages: 18
Registered: February 2004
Karma:
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Junior Member |
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Been noticing a new "Rumble" in the right front of my coach the last few
times I have been out. It sounds like when you put big "Off -road" tires on
your truck. Tires are 3 yr old V-Steels and in great looking shape and
inflated properly.
It seems to start around 30 mph and gets quieter around 65. "On or Off"
the throttle has no effect nor does braking so I don't think it is the final
drive or front wheel bearings... usually braking will change the wheel
bearing noise. Bearings are less than 12,000 miles. Also does it with the
engine off and coasting down a hill ... different road surfaces don't change it
either... concrete to asphalt.
Replaced the "drive shaft extension bearing" which was shot but no change.
Could be the final drive bearing I guess.
Just lifted the front end with my forklift and ran it up to 45 with the
wheels in the air and it is quiet. So... I rotated out the front tire to the
back and we will see...
Any other ideas???
Thanks!
Bruce in Santa Barbara
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