Question about 2003 GMC Yukon Denali
I installed new fuel pump gas gage worked prior but not pump now neither work, is there a inersha switch on a yukon 2003 denaili xl or more than one fuse relay for the feul pump and do you have schematic for the fuel pump wiring harness from pump to fuse box in the engine compartment?
There is no inertia switch. The diagram I've attached shows that the fuel pump relay and fuse are in the engine compartment fuse block. You may notice another fuel pump relay and pcm output in the diagram but those are for the trucks with a secondary tank.
Hope this helps,
Let me know if I can provide anything more. If the picture is too small, drop me a note at daves944 at yahoo dot ca and I can send a bigger file.
Posted on May 28, 2010
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Posted on Jan 02, 2017
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