how to clean computer on a 2005 grand vam
very poor gas mileage on 2005 pontiac grand am have already replaced sparkplugs fuel filter and air filter is there something wrong with the computer or a sensor.
how can I fix gas mileage from 550kms to a tanf of gas to 320 kms to a tank of gas
Do you have a Check engine light on? Engine running bad? Tires inflated properly?
V6 or 4 banger?
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