Question about 1999 GMC Yukon

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1999 Yukon Start Issue

I have replaced the octopuse, battery, fuel filter, fuel pump, still having problems starting in cold weather, sometimes after a heavy rain.

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  • kfq0306 Jan 06, 2009

    Thank you for the information I have forwarded on to my mechanic....I will leave feedback later to let you know if this worked for me as well. Thank you!

  • fiademia Jan 19, 2009

    My vehicle won't start but its warm out. Wondering if its the same deal, after the cold, then the rain. We've added heet in the fuel tank, having it towed to the garage today.

  • kfq0306 Sep 07, 2009

    When replacing the oxygen sensors did you replace the upstream or downstream sensors...or all? Thanks

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We had the same problem until i replaced the oxygen sensors and water proofed the connections
Tom

Posted on Dec 28, 2008

Testimonial: "Seems helpful -- I am wondering if you had to replace all four sensors or only upstream / downstream? Thank you"

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