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2006 GMC Sierra 1500 Question: what is the function of the sending unit on a GMC1500 Sierra

 

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vana317, Nashville, TN, May 29, 2013, 17:54
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I had P0449 code - shop replaced canister vent solenoid & vent valve - now have non-working gas gage - could this be due to bad sending unit? Shop is saying gas float is to blame, need new fuel pump - what is connection of sending unit to gas float ? pls advise

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