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Home » Public Forums » GMCnet » Re: [GMCnet] Tranny fluid from differential or pan
Re: [GMCnet] Tranny fluid from differential or pan [message #320104] Fri, 07 July 2017 14:26 Go to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
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Senior Member
If it's pink, it's transmission fluid. If it's brown, it is differential
lube. If it's leaking at the joint between the transmission and final
drive, then it probably the duplex seal. If that is the case, the final
drive or the transmission needs to come out. Sorry.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Jul 7, 2017 12:21 PM, "Mark Raudenbush"
wrote:

Okay so how many of these discussions begin with "I just took my RV out of
extended storage"

She's been put up for a year. I started it up today and I have tranny fluid
dripping from right between the pan and the differential. Anyone seen this
before? I'd love to think it's just a pan gasket, but could it be the rear
(front) seal?

Thanks
Mark

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Re: [GMCnet] Tranny fluid from differential or pan [message #320106 is a reply to message #320104] Fri, 07 July 2017 14:31 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
Is it coming from the weeping hole?
Call me so I can guide you.

On Fri, Jul 7, 2017 at 12:26 PM, James Hupy wrote:

> If it's pink, it's transmission fluid. If it's brown, it is differential
> lube. If it's leaking at the joint between the transmission and final
> drive, then it probably the duplex seal. If that is the case, the final
> drive or the transmission needs to come out. Sorry.
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403
>
> On Jul 7, 2017 12:21 PM, "Mark Raudenbush"
> wrote:
>
> Okay so how many of these discussions begin with "I just took my RV out of
> extended storage"
>
> She's been put up for a year. I started it up today and I have tranny fluid
> dripping from right between the pan and the differential. Anyone seen this
> before? I'd love to think it's just a pan gasket, but could it be the rear
> (front) seal?
>
> Thanks
> Mark
>
> _______________________________________________
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Tranny fluid from differential or pan [message #320229 is a reply to message #320106] Sun, 09 July 2017 15:33 Go to previous message
White Lighting is currently offline  White Lighting   United States
Messages: 3
Registered: March 2015
Location: Naples, Fl
Karma: 0
Junior Member
It is pink, certainly tranny fluid. I had the tranny rebuilt in key West a couple years ago, I was surprised to see problems at all.

Not looking forward to dropping the tranny again.

It doesn't seem to be out of the weep hole. There's a bit of a bulge in the pan gasket I'm hoping it's just that

Jim, I'll call you some time this week see if we can identify the problem.

Much thanks
Mark
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