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Old 10-06-2011, 05:48 PM   #1
jesse977
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Join Date: Jun 2004
Location: Los Angeles
Posts: 277
How to test fuel sending unit to see if its bad?

I dropped my tank and removed the sending unit. I noticed the ground wire was frayed so I fixed it. How can I check to see if the fuel sending unit works without installing it in the tank and putting the tank back on the truck? I have a74 gmc swb 350 engine. Can I hook up the sending unit to the truck to see if it works? Whats a good place to buy one online if its bad?
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