Chevrolet Engine Poor Mileage

Used To Get ~25 Miles Per Gallon Until About A Year Or So Ago, Now Gets 19-20. New Tires At Proper Inflation. Changed Oil, Oil And Air...

I Have Noticed A Big Drop In My Fuel Economy. The On Board Computer Says That It It Only Getting About 13 Mpg In The City. There Has Been...

Only 11.4 Mpg. On The Freeway,6.0 Engine 2500 Hd

I Drive The Suv Listed Above That I Have Been Working Out Of For The Last 2 Years. When I First Bought The Truck 10 Years Ago My Average Mpg...

I Have What Acts Like A Low Speed Miss,i Am Pretty Sure It Is Mechanical -u-joints,rear Axle,rear End,etc Runs Fine After 30 Mpg,or If I...

Ok. Im Not Sure If This Is Even A Problem Or Not... The Problem Is That The Idle Takes A Long Time To Kick Back Down. Whether The Car Is...

My 2003 Chevy 1500hd Has A 6.0l In It That Feels Like It's "pulling Hard" All The Time. At 60mph It May Need To Downshift Just To Climb A...

Van Is Rated 16mpg City 20mpg Highway Im Getting Average 12.5 Mpg Which Is 60%highway 40%city.i Also Have A 1999 Astro Same Van Same Engine...

This Summer While Vacationing, The Check Engine Light Came On, We Had It Checked And The Serviceman Said It Was Safe To Drive, But Could...

Are There Any Proven Ways To Get Better Mileage With The Tahoe's Vortex V8? Specific Air Filter Or Device? Thank You! Tom