Get it tuned out

 

engine still under warranty

 

BullyDog GT Tuner is on it's way.

 

I just got a 2010 4.8 4x4 crew cab. Ive only gone through one tank so far driving very lightly and i only got 11.8mpg not to happy about that trying to figure out what i can do to improve to at least 15

 

Hand calculate it before trustin the dic. They're right about 2% of the time

 

Here is my fill up Truck (Chevrolet Silverado 1500) | Fuelly

 

2013 Crew Cab, 5.3 with ~700 miles on the engine:

16.7mpg

 

I have had my 1999 Silverado 5.3, extended cab, 3 door, long box with 4 wheel drive for about 6 weeks now with 218xxx miles on it and am getting around 19 mpg. I don't put that many miles on it now seeing as I'm retired but I have checked the mileage for the 3 times I've filled it up. It ends up being 19.1 something something. I can live with that. I might add that it runs like a champ. No noise or leaks anywhere.

 

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There are a few tips for getting better gas mileage at: Gas Mileage Tips

Louis
GM Customer Service