Question about 2001 GMC Yukon

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I no longer get the same mileage on a tank of gas. It was not a gradual change. From 1 day to the next I noticed I no longer get 320 miles per full tank. I only get 240 - 260 miles. what can I look at ? It is a 2002 Yukon 5.3L V8 with 184000 miles.

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I know if you don't have good air flow to the air breather, you will loose gas mileage...make sure you have a good clean air filter...this would be a good start for you...

Posted on May 23, 2011

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