Question about 1991 GMC Sierra
2 things to look into. #1 you could have a clogged fuel filter or the sending unit located on the top of your gas tank needs to be replaced or you have a bad ground wire on it. You can take the fuel filter off and blow through it to see how much flow your getting (should go through without alot of restriction). With the sending unit, stand outside your truck and turn the key so the power comes on the truck. you should hear a small (whir) noise coming from the gas tank. If you dont hear that then check for a bad ground connection.
Posted on Jan 05, 2011
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Posted on Jan 02, 2017
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