Gray and black water tank readings

J

jane field

New member
Apr 25, 2013
22
0
0
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
 
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

>
> 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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
I think Chuck has a Coachman, so there mist be paper stuck on the sensor.
Fill the tank about 1/3 full and jerk as you drive as the water need to
slosh on the rear side.

> 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
>
>

> >
> > 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
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
Chuck,
I can get you new style sensor screws that tends to over come that issue.

> I think Chuck has a Coachman, so there mist be paper stuck on the sensor.
> Fill the tank about 1/3 full and jerk as you drive as the water need to
> slosh on the rear side.
>
> On Sun, Sep 3, 2017 at 2:41 PM, John Wright

>
>> 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
>>
>>

>> >
>> > 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
>> > _______________________________________________
>> > GMCnet mailing list
>> > Unsubscribe or Change List Options:
>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk
> http://www.appliedgmc.com
> 1-800-752-7502
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
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