Posted 3/10/2008 08:43 (#330474 - in reply to #330208) Subject: Re: 6 litre Chevy pickup vs 5.3
High Springs, Florida
We just got a 5.3L GMC extended cab 2WD here at work. It's gettng 18-20 mpg combined city/hwy. It switches between 4 and 8 cylinders. It's got about 7500 miles on it so far.