2006 Buick Rainier Q&A

2006 Buick Rainier Question: What will cause my buick Rainier to get low gase mileage.

What will cause my buick Rainier to get low gase mileage. I currently get 10mpg on highway? -
Answer 1
That is to broad of a question. How many miles on vehicle? What have you done as far as servicing the truck? I don't mean just oil changes. -