Question about GMC Yukon XL

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On a 2005 GMC Yukon that will not start on first try but will start very well on second attempt. We took it into the shop and they say it is a bad fuel pump. They said the fuel pressure was to low.If they are correct do they sell a replacement fuel pump to be able to install in the unit without replacing the complete unit? Is their maybe some other reason the yukon won't start on first attempt. Yet it does very well after it starts. Please Advise

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  • luciano gonzalez May 19, 2011

    Thank you for the rapid reply.

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The answer to the first question is No there is nor replacement except replacing the whole unit to be correct. You could buy an after market pump and rig a hose from the tank to the pump but that is not advisedn due to a possible fuel leak or worse. The other reason for low fuel pressure is the filter, I would change out the filter and then do a pressure test if your concerned, but fuel pumps usually last 4-6 years and they are a common replacement. I agree it is rediculous what it cost to rplace these from a shop. You can do it your self but you have to drop the tank to get to the fuel pump assembly, this is a 2 man job if doing this in your driveway.

Posted on May 19, 2011

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