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

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the_behemoth11

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I have just returned from a road trip that stretched from NYC to Salem, Massachusetts. The truck performed very well on the highway during the 5+ hours of travel but I wish I could say the same for the gas mileage. I had a maximum of 450+ miles on a full tank but my average mpg stayed at 14.1 the entire trip. If there’s anything I can do to help increase the fuel mileage that would be great. I recently put in a new engine air filter and maybe every 3,500 miles I treat the fuel system with Techron


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PG01

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I have just returned from a road trip that stretched from NYC to Salem, Massachusetts. The truck performed very well on the highway during the 5+ hours of travel but I wish I could say the same for the gas mileage. I had a maximum of 450+ miles on a full tank but my average mpg stayed at 14.1 the entire trip. If there’s anything I can do to help increase the fuel mileage that would be great. I recently put in a new engine air filter and maybe every 3,500 miles I treat the fuel system with Techron


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Just curious, did you reset the dic at fill up? What kind of speeds were you doing?

Does it have a supercharger ?
 

Doubeleive

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I have just returned from a road trip that stretched from NYC to Salem, Massachusetts. The truck performed very well on the highway during the 5+ hours of travel but I wish I could say the same for the gas mileage. I had a maximum of 450+ miles on a full tank but my average mpg stayed at 14.1 the entire trip. If there’s anything I can do to help increase the fuel mileage that would be great. I recently put in a new engine air filter and maybe every 3,500 miles I treat the fuel system with Techron


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accelerate like a 90 year granny and keep it at 55 that's about the only thing that will garner you more mpg
 

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