1994 Chevrolet Silverado Gas gage

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

Sunday, September 13th, 2015 AT 9:15 PM

3 Replies

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

AUSTINOSBORN14

MEMBER
1 POST

Which colors on the sending unit do I need to test?

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Sunday, September 13th, 2015 AT 9:45 PM

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