Question about 2001 GMC Yukon XL

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Missing I have a 2001 Yukon XL that has a bad miss in the engine after it warms up. Works like a charm when it is running cold.

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  • gastek309 Jan 30, 2009

    I do not have a trouble code. I have no faith for some reason in the codes. It could be my bad experiences of replacing too many O2 sensors for nothing. I can get it put on the computer if this is what your suggesting.

  • yadayada
    yadayada May 11, 2010

    I can tell u know zip about what a trouble code means. A trouble code doesn't mean just a sensor issue, it means a problem in the whole system that the sensor responds to, why do u think dealers have 100's of thounsands of $ in electronic test equip? because they like spending money?

  • yadayada
    yadayada May 11, 2010

    what trouble code do u have?

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May want to check fuel pressure regulator to do this start truck and pull off the vac.line on the regulator no fuel should be squirting out if it is replace regulator

Posted on Jan 31, 2009

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