Service Life - 3.07 Final Drive (Yup, mine too!)

mark grady

New member
May 2, 1998
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Fred --

I'll follow the responses you get, because our '77 Kingsley has the same
final drive 'whine' and always has. I have 78K miles.

I'm considering a change to synthetic final drive fluid to see if that
helps. It's so minor that I'm the only one in my family that hears it.

I can't help you solve the problem, but can confirm that at least one other
coach has it too.

Mark Grady

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of
> FBHUDSPETH
> Sent: Tuesday, February 16, 1999 1:05 AM
> To: gmcmotorhome
> Subject: GMC: Service Life - 3.07 Final Drive
>
>

>
>
>
>
> Birmingham and Atlanta, the final drive is original, the transmission was
> rebuilt 6 times and the original 403 was pulled at 250k miles and the
> current 455 (now has over 300k on it) was installed.
>
> God, I love this GMC!>>
>
> I am impressed with the service life of the final drive in Dave's
> coach. I am
> concerned about the whine in my 3.07 and it has only 44 K miles
> on it!! The
> service manual states that the gear set is not designed to be
> totally quiet
> but the whine is a little disconcerting. It is most pronounced
> at about 35
> MPH in both acceleration and deceleration modes. Passengers
> riding "shotgun"
> never hear the whine unless I point it out to them and they
> listen carefully.
> It may be that the driver hears the whine because the gear set is
> just below
> the driver's feet.
>
> How much noise is permissible? I acknowledge that any answer will be
> intangible at best. I have owned the coach, a '78 Royale, for
> about half of
> the total miles on it. The noise has not intensified during the
> time I have
> owned it. The original owner, from whom I bought the coach, did
> not even know
> about the whine until I pointed it out to him. I then do not know
> how long it
> had been there before I bought the coach but I suspect since "time zero".
>
> 'Would appreciate comments on the noise levels of other 3.07s.
>
> Thanks,
>
> Fred Hudspeth
>
>
>
 
I am new to GMC's, but my '76 Palm Beach with 125,000 miles on it also has a
"whine" at about 35 MPH or so. I figured it was normal. I'm more concerned
with the possibility that I have a leaking exhaust head. That sound comes and
goes.

Richard Waters

>
>
> > -----Original Message-----
> > From: owner-gmcmotorhome
> > [mailto:owner-gmcmotorhome]On Behalf Of
> > FBHUDSPETH
> > Sent: Tuesday, February 16, 1999 1:05 AM
> > To: gmcmotorhome
> > Subject: GMC: Service Life - 3.07 Final Drive
> >
> >

> >
> >
> >
> >
> > maintaining this coach for the 8 years it made daily runs between
> > Birmingham and Atlanta, the final drive is original, the transmission was
> > rebuilt 6 times and the original 403 was pulled at 250k miles and the
> > current 455 (now has over 300k on it) was installed.
> >
> > God, I love this GMC!>>
> >
> > I am impressed with the service life of the final drive in Dave's
> > coach. I am
> > concerned about the whine in my 3.07 and it has only 44 K miles
> > on it!! The
> > service manual states that the gear set is not designed to be
> > totally quiet
> > but the whine is a little disconcerting. It is most pronounced
> > at about 35
> > MPH in both acceleration and deceleration modes. Passengers
> > riding "shotgun"
> > never hear the whine unless I point it out to them and they
> > listen carefully.
> > It may be that the driver hears the whine because the gear set is
> > just below
> > the driver's feet.
> >
> > How much noise is permissible? I acknowledge that any answer will be
> > intangible at best. I have owned the coach, a '78 Royale, for
> > about half of
> > the total miles on it. The noise has not intensified during the
> > time I have
> > owned it. The original owner, from whom I bought the coach, did
> > not even know
> > about the whine until I pointed it out to him. I then do not know
> > how long it
> > had been there before I bought the coach but I suspect since "time zero".
> >
> > 'Would appreciate comments on the noise levels of other 3.07s.
> >
> > Thanks,
> >
> > Fred Hudspeth
> >
> >
> >