It idles very rough. What is your question?
My vehicle idles rough after adding Mechanic in a Bottle and driving about 75 miles. It runs good on the highway.
What makes this problem better or worse?
It may not do it after just starting the vehicle. But get worse stop after stop.
How long has your 2011 GMC Yukon XL 1500 had this problem?
Two days.
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