What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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BG1988

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By that wording, the short answer is 'no'.
When idling, you're achieving no mileage per unit of fuel burnt. Can't get any worse than 0 miles per gallon.

...Wait- what was the question, again?
it can get worse you could be reving the engine while widling
 

BG1988

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put some new wipers Upgraded to 24"/24"

I recommend 24" driver /22" passenger(that is what ill get next time)

after.jpg
 

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