Question about 1997 GMC Jimmy

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Fuel gage jumping around and truck stalling out

I have a 1997 GMC jimmy 314,000KM on it. the fuel gage jumps around and stalls out, when i hit the brakes or turn signles or some times just out of the blue. and when you turn the key into the on postion the gage jumps to the max of full then you can hear everything kick in within 1 to 5 secs like fuses clicking and daytime running lights will then come on thats when you can start it, if you try and start it when the gage is jumped to the max it wont start will just keep turning over. i thought maybe a ground problem but i think the volt gage would move around then but it dont. need help


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  • tattooed4ink Jan 23, 2009

    the ground that comes from the battery goes right too the frame

  • tattooed4ink Jan 26, 2009

    where is the fuel pump modual? and pig tails? anyway you give me a step by step?

  • tattooed4ink Jan 31, 2009

    ok now i will add i noticed on my dash the fuel gage is shaking like crazy like bouncing very fast? this help anyone?

  • tattooed4ink Feb 01, 2009

    so your saying i have to drop the tank? and how much does this fuel module cost ruffly? dont want to get ripped



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Replace the fuel pump module ,it is pricey ,use bosch brand only cause they are lifetime warranty.make sure pig tail to module is replaced ,very important.I do about 10 of these a year

Posted on Jan 25, 2009

  • dwarrenss454 Jan 31, 2009

    the module is the fuel pump assembly ,in fuel tank fuel sending unit is made to the side of the pump assembly,the pig tail is the wire that connects to the pump externally ,bosch pump will come w pig tail


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Go to the battery follow the cable that dose not go to the starter the other cable will go to hard piont that is the feed for the fuse box check that connection

Posted on Jan 23, 2009


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