Here is a weird one. The wife told me about a strange noise from her 94
S Blazer. She said it sounded like a motor driven siren turning real
slow. It only does it once in a great while and only after going uphill
and cresting the top. So I took it out today and finally it made the
same noise. Running about 45 when it started, tossed it in neutral and
no change, put it in 4 wheel and no change, shut down the engine with no
change, hit the brakes and still no change except as the truck slowed
the noise slowed as well, once it got below about 10 the trucked made a
little jerk and the noise went away, it didn't come back. I looked for
any rubbing and nothing.
I THINK it may be the right rear axle bearing but every one I have ever
heard just seemed to rumble never this kind of noise. Anyone have an
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