Questions & Answers for: cause poor gas mileage 2003

...to drop the gas tank to get at it... expensive repair and common to these GM's... BTW GM blames it on "poor fuel (too much water in the gas these days is causing the contacts to prematurely

mileage i have code po440 .i changed gas cap and turned off the chech engine light... i made 300 miles and it was good and today morning i drove a mile and light turned on ..... what do i have to fix

Bad gas mileage My 2003 chevy impala has horrible gas mileage. it will go through a half a tank in about 140 to 150 miles. What Do i do? Get a tune-up.

Poor gas mileage after a long trip on my 2008 Chevy HHR After a long trip, my gas mileage on my Chevy HHR went from 32MPG to 23MPG. No errors and no warnings. No other noticeable changes. Gas does get

gas mileage on my 2003 Chevy Trailblazer is very bad. As soon as the gage left the full bar, it becomes a free fall, meaning the gas just drop down so fast. What should I do to improve my gas mileage?

2003 Chevy Trailerblazer getting low gas mileage 6 cylinder 63,500 mileage Try changing the fuel and air filter as well as spark plugs and wires

...miles due I need to repair parts getting really low gas mileage in last week I only suggest using factory tune up parts. Don't forget to set you tire pressure according to the driver's door

...gas mileage what could be wrong what could be causing this You should check tire pressure. Make sure there are no brakes holding by jacking up the vehicle and spinning each wheel. If those aren't the ...

...2003 mileage only 158,000 KM not shooting / picking up immediately upon giving accelerator. have changed spark plugs and used Fuel Injector Cleaner in Fuel Tank but no positive results. Can someone ...

poor shifting, can't run the A/C. Does anyone have any thoughts before I spend more money? Check the timing chain. Some times the chain will shift with worn teeth and get out of synch. This will cause