Chevrolet Truck Engine Poor Mileage

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...

5.7 Idles Ruff Erratic Jerking When Driving. Excessive Fuel Consumption. New Wires Plugs Maf. Started Doing This After I Replaced The...

Engine Performance Problem 1998 Chevy Truck V8 Automatic 105000 Miles My 98 Chevy 3500 Was Getting 11 Miles Per Gallon Last Year. This...

I Recently Bought An Old Business Owned Truck That Had A Few Problems That I Have Been Trying To Fix But I Have Noticed My Fuel Mileage Has...

Hello, I Have 1998 Chevy K2500 With A 350 V8. I Just Had A Used Motor Put In The Vehicle Two Months Ago. Ever Since My Gas Mileage Has...

When I Connect Obd2 Scanner To Connecter It Dosent Automaticly Come On , I Checked The Connector And Have No Power To The One Terminal That...

My 1997 Chevy Lumina Has Lost 6 Mpg Putting Me Around 13 Mpg City. I Was Wondering What Would Be Causing This Or If There Are Any Tips On...

I Have A 1996 Chevy Blazer 4x4 2-door. And When It Sets For Like 4 Days Its Harder To Start But If It Set For A Week It Wont Start With Out...

1993 Chevy C1500 5.7ltr 350. I Recently Changed The Fuel Line, Intake Gasket, And Throttle Body Gasket. Truck Ran Fine Before The Intake...

1993 Chevy K1500 With 5.7 Runs Rough, Blows Excessive Black Smoke, Poor Fuel Economy, No Codes Present? Have Replaced Map Sensor.