1994 Chevrolet Silverado Gas gage

Tiny
AUSTINOSBORN14
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
My truck has a problem of the gas gage. The gas gage stays at the E line all the time, when moving or not. I am not sure what the problem is but there is a switch for my fuel pump on my dash. I think the person who wired it up took the wires to the gas gage dial. Please help! Thanks
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Sunday, September 13th, 2015 AT 9:15 PM

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Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
The switch is to switch tanks.

Gain access to the fuel pump/sending unit on top of the tank and see if it's getting power. You could, first, check the fuses.
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Sunday, September 13th, 2015 AT 9:39 PM
Tiny
AUSTINOSBORN14
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Which colors on the sending unit do I need to test?
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Sunday, September 13th, 2015 AT 9:45 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
If you've got a test light, check them both. I've attached the instrument cluster schematic. Unless the previous owner changed it, it looks like it should be purple. To ground with power on. The turn the key off and test resistance across the two terminals with a meter.

Www. Dropbox. Com/s/89da3qfcoj8445u/Silverado%20Instruments. Pdf?Dl=0
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Sunday, September 13th, 2015 AT 10:22 PM

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