Question about 1997 GMC Sierra

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Why is my gas gage showing empty when there is gas in the tank and there is a new pump and sensor system? 1997 GMC Sierra Truck V8

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By sensor i assume you mean sending unit? did you forget to hook up the wire that goes to the fuel gage? was the wire corroded or black where it should have been shiny copper? if it wa you probably are not getting the proper resistance to the gage for it to work. if you can still access this wire, try un-hooking it from the tank and touching it to ground note the gage position.... now remove the ground and see if the gage changes position... if it does, its the sending unit or your connection to it. if no movement, the wiring to the gage is suspect or even the gage itself.

Posted on Mar 23, 2011

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Float in tank could be stuck or you have a faulty guage.
Check all your wiring!
Hope this helps, please let me know

Posted on Mar 23, 2011

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