Several years ago, when I bought my 2004 Tahoe K1500 LT w/the 5.3L V8 FFV, it averaged 13.5 mpg in town. Since then, fuel economy has been gradually decreasing, and now it averages 10.9 mpg in town. I have performed all the scheduled maintenance, and keep the tires at the proper level of inflation. Why might this be? Thanks
have the same problem?
Wednesday, December 7th, 2011 AT 6:49 PM