Question about 1999 GMC Yukon
You have to drop the tank. Should be two straps under the vehicle holding the tank up. Then you will need some quick connect fuel tools to unhook the lines. Unhook the fuel fill hose. Then it is a matter of a couple of electrical snaps. Take ring off top of sending unit and pull it out.
Posted on Dec 03, 2012
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Posted on Jan 02, 2017
on these models on the harness that plugs into the fan switch goes bad, I changed the switch and found this harness melted together on my 99 yukon
Posted on Jul 19, 2009
Your sending unit for the guage is part of your fuel pump in the tank. But first try your fuel pump relay, may be working intermittenly when you hit a bump or something. Or possibly a loose wire somewhere along the way. Much less expensive (worth a look).
Posted on Dec 18, 2009
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