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  1. John Bragg

    Intermittent shut down issue

    Hello all! So my 2003 Yukon XL is having a temper tantrum. For a while now I have been having random engine shut downs. No check engine light, and actually no lights at all except the battery light. I was thinking it was a fuel issue, however that seems to not be the case. I was wondering if...
  2. John Bragg

    Reduced engine power....anyone have a stick of dynamite??

    So it's been about 2 1/2 years now dealing with this issue. I've posted about it in the past. Replaced the entire throttle body, mass air flow sensor, and the sensor at the accelerator pedal. Not to mention fuel pump and complete fuel line system in the entire vehicle. I have checked the wiring...
  3. John Bragg

    Scan tool

    So I subscribed to all data diy to get this reduced engine power problem figured out. Of course with my luck my current scan tool isnt advanced enough. So I ask does anyone on here know of a good budget friendly scan tool that I can perform all the necessary tests and checks with? Any help is...
  4. John Bragg

    Reduced Engine Power, reducing my sanity

    I'm curious is the reduced engine power the sign that the Yukon is ready for the yard??? I have been fighting this issue for probably pushing 2 years now. I have put in mass air flow sensor, throttle body, throttle position sensor, accelerator position sensor, new plugs, new wires, new fuel...
  5. John Bragg

    Throttle position sensor correlation

    My 2003 Yukon XL had a check engine light. It has had some starting issues doesn't always fire on first crank attempt. Had the codes pulled came up as MAF so I replaced it. Seemed to be better for a short time. Now starting issue continues and I have been getting reduced engine power. Started...
  6. John Bragg

    Crank time and maintenance questions

    I have an 03 Yukon XL with the 5.3 it seems to me that the crank time seems a little long compared to previous gm products I have dealt with. My first thought is worn plugs or possibly a fuel filter needing replaced. It has 167000 miles. With that my next question is what plugs should I...
  7. John Bragg

    Newbie 2003 Yukon XL

    I am less than a month into my first Yukon a 2003 XL with 165000 miles and I am loving it. I live in northern illinois so I will wait to post a pic till it loses that salt lick look....im happy to be a new member and cant wait to share info pics and stories!

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