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TTatman71 replied to the thread 2003 Yukon Reduced Engine Power.I did see that. We had already replaced all the grounds prior to seeing that. That helped rule that out. Thank you for sending me the...
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TWelcome from Texas! Too bad you did all that work (and spent all that $$), and still don’t have a fix. Hoping the sage advice from...
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TWelcome to the forum! Carefully inspect the wiring harness from the throttle body connector back six inches or so; others have had...
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TI have been having issues with my 03 Yukon. Runs like crap, no power and goes into Reduced Engine Power mode frequently. I have changed...
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