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The strictly gasoline 2008 Chevy Impala holds 17 gallons of fuel; the E85 model holds 14.2 gallons of fuel. I obtained this information from Motor Trend. Hope this helps!
The fuel tank EVAP pressure sensor is located on top of the fuel tank along with the fuel pump assembly.
In the fuel tank
The 2003 Impala has a 17 gallon fuel tank
The 2008 Chevrolet Impala runs on flex-fuel (unleaded/E85).
you can check your fuel pressure! check the timing, maybe even your crankshaft and or camshaft sensor. maybe weak fuel pump
I have a 2008 Impala LH and get 18.9MPG mostly city drivingI do not have the flex motor just the 3.5 V-6. My friend drives his Impala over the road a lot and gets in the high20's MPG
In the fuel tank...
Chevy did not use a reset button/switch. You need to check fuel pump fuse and relay first. Then check the fuel pump itself.
in the gas tank
Inside the fuel tank