Thanks for all of the help and suggestions. I have a trusted friend looking into this issue for me. He also believes that there is a computer issue. He called his father who owns a junk yard and asked for his opinion and he said there is a box (instrument control) that he should check first...
I am currently deployed and my wife is having serious trouble with her 2003 Yukon 2500XL 6.0L. We have four kids and she has not been able to get the Yukon to start for over a week.
Here's the background. Our community was about to be evacuated for a wildfire so my wife packed a few...
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