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Old 09-09-2011, 07:44 AM   #13
usp55
 
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Join Date: Oct 2007
Location: Sewell, NJ
Posts: 1,044
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I have the 4.8 in my 03 Tahoe and i hawk my scanguageII. I get about 14 in the city and 17-18 highway if out in front. Behind a truck it jumps to 22. 8hrs to OBX a week ago I avg'd 17.5

i would think you could get about 21mpgs out of that combo but a quick search on Google brings up a ton of threads about it and most posts talk about 25+mpg hwy.
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