| Re: [GMCnet] Gray and black water tank readings [message #323267 is a reply to message #323266] |
Sun, 03 September 2017 16:41   |
powerjon
Messages: 2446
Registered: January 2004
Karma:
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Senior Member |
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Jane,
If you still have the factory senders, there is very high chance that they have failed. The original construction of the senders was that water could get into the variable resistors and they fail. They are not repairable and not available, but there are several fixes that you can use.
A new style dry electronic sensors are available that are a direct bolt in and wiring.
http://www.appliedgmc.com/prod.itml/icOid/839
and
http://www.appliedgmc.com/prod.itml/icOid/838
I did it this way and they work well.
Now a more cost effective route is to use this:
http://www.appliedgmc.com/prod.itml/icOid/1181
I have this in our coach now and it does work fine. They are a probe unit and does require adding probes to the tanks and some wiring.
JR Wright
GMC Great Laker MHC
GMC Eastern States Charter Member
GMCGL Tech Editor
GMCMI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
> On Sep 3, 2017, at 5:20 PM, Jane Field wrote:
>
> I am having a problem with my tank electric read-outs. One tank is reading
> full when in fact it is empty. I cleaned the leads on the outside of the
> tanks, but one tank is stills reading full. I think it is the black water
> tank.
>
> What else might I try.
>
> Chuck Field
> 77 Royale
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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