Question about 2003 GMC Yukon Denali

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Is there a inersha switch on a yukon 2003 denaili

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?

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  • triforlif Jun 03, 2010

    thankyou for the help i will use it agian if needed you were very helpful.


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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.

Daveis there a inersha switch on a yukon 2003 denaili - 6e26566.jpg

Posted on May 28, 2010

  • 1 more comment 
  • Dave  C
    Dave C May 28, 2010

    This is the same pic but I tried to make it a little clearer.

  • triforlif May 29, 2010

    Hi Dave

    The schematic is too small too read could you send a bigger pic/ file so I can print it.


  • Dave  C
    Dave C May 29, 2010

    Sure, no problem but I need an email address to send it too. If you drop me a quick note at the address I left in my first comment, I'll send it off to you.


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