I have an 03 Sonoma 2wd extended cab with 4.3 engine. automatic tranny with O/D. I can't seem to get better than low 20's miles per imperial gallon. Is this normal or should I expect better? The truck starts and runs absolutly great.

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Sounds about right, I'm only getting 20 in the city, probly 24-26 highway. Mines a 4WD.