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wriley4409 · 08-11-2015, 06:05 PM

I'm not sure about the Silverado or Suburban air dam, but an effective air dam would help with mileage at highway speeds. You should be able to fashion one from plastic lawn edging material. There are several examples of those on ecomodder.com

08-11-2015, 06:05 PM	#6 (permalink)
wriley4409 EcoModding Lurker Join Date: Dec 2007 Location: Central Arkansas Posts: 33 Thanks: 0 Thanked 2 Times in 2 Posts	I'm not sure about the Silverado or Suburban air dam, but an effective air dam would help with mileage at highway speeds. You should be able to fashion one from plastic lawn edging material. There are several examples of those on ecomodder.com