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Old 03-18-2011, 05:42 AM   #1
ehcees
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Question Gas Gauge & Sending Unit Remove/Test

1971 Chevy Cheyenne 10 Fleetside Long Bed, 2WD, 350/4bbl, AT.
Seeking instructions to remove & test:
(a) Dash gas gauge.
(b) Gas tank sending unit.
Diagrams would be plus.
Please do not use this thread for other topics or comment on text & color choices. Thanks.
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Old 03-18-2011, 10:38 AM   #2
northerngmc
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Re: Gas Gauge & Sending Unit Remove/Test

Here is a link to a page that has a drawing and instructions for troubleshooting gas gauge problems.

http://www.6066gmcguy.org/Electrical-02.htm

Worked well for me on my 69 GMC a few years back.
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Old 03-18-2011, 12:27 PM   #3
dmack91
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Re: Gas Gauge & Sending Unit Remove/Test

Disconnect the sending unit wire. Ground it out and the gauge should move (to empty I believe) with the key on.

The resistance on the sending unit should read 0-90 ohms from the post to ground.

Just replaced mine and works fine now. Classic Chevy had the best price $30, that I found. LMC was $50.
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Last edited by dmack91; 03-18-2011 at 02:34 PM. Reason: corrected - thanks VetteVet
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Old 03-18-2011, 02:14 PM   #4
VetteVet
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Re: Gas Gauge & Sending Unit Remove/Test

Quote:
Originally Posted by dmack91 View Post
Disconnect the sending unit wire. Ground it out and the gauge should move (to empty I believe) with the key on.

The resistance on the gauge should read 0-90 ohms from the post to ground.

Just replaced mine and works fine now. Classic Chevy had the best price $30, that I found. LMC was $50.
Yes the gauge should read empty if you ground the sender wire with the key on. Also if you unplug the sender wire from the fuse panel, the gauge should read full plus to the three o:clock position.

I believe you meant to say that the SENDING unit should read between 0 and 90 ohms depending on the float position.
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Old 03-18-2011, 02:19 PM   #5
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Re: Gas Gauge & Sending Unit Remove/Test

Well the good tech has been covered but I have a question regarding the pole, what does it pertain to?


Edit>>> I mean poll.
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Last edited by fixit-p; 03-18-2011 at 07:27 PM. Reason: spelling
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Old 03-18-2011, 06:07 PM   #6
69sixpackbee
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Re: Gas Gauge & Sending Unit Remove/Test

Quote:
Originally Posted by fixit-p View Post
Well the good tech has been covered but I have a question regarding the pole, what does it pertain to?
What "pole" ?? North, South or stripper?
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Old 03-18-2011, 06:12 PM   #7
northerngmc
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Re: Gas Gauge & Sending Unit Remove/Test

Quote:
Originally Posted by ehcees View Post
Please do not use this thread for other topics or comment on text & color choices. Thanks.
So much for the request!

Pole or Poll?

To strip or not to strip, is that the question?
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Old 03-18-2011, 10:15 PM   #8
trapperjack
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Re: Gas Gauge & Sending Unit Remove/Test

Well this non-existant pole has helped me. I found it by by accident searching for gas gauge fixes. Poll, pole, or Pole, I don't care. I now know my sender is the problem, so thanks to all.
Back to your regularly scheduled pole, with no question.
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