Any Diff In Mpg Between Avalanche And Silverado/sierra?

[b00001]

I know EPA Fuel ratings are the same, but isn't the Avalanche a heavier vehicle, so wouldn't it get a less favorable MPG?

[matt3]

I know EPA Fuel ratings are the same, but isn't the Avalanche a heavier vehicle, so wouldn't it get a less favorable MPG?

 

I could see the Avalanche getting a little worse MPG's but, the Silvy/Sierra will be the same.