Silverado Hybrid Mileage 2009 vs. 2010 vs. 2011
#1
Silverado Hybrid Mileage 2009 vs. 2010 vs. 2011
What reason(s) give the 2010 or 2011 Silverado 4X4 Hybrid better fuel economy than the 2009? Is it a software change? Is it revised EPA figuring? Something else? Thank you in advance.
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