Just took a 2000 mile trip from dallas to all over colorado. Overall average for my Denali was 20.8 mpg. Best tank was actually in the mountains and was almost 24 mpg. This was a lot better than I thought it would be.
I would also like to know if you feel any of the interior bulbs need to become brighter. I am ordering the fog and rear bulbs and figure I can add those if needed. Thanks
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