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Horrible Gas Mileage

Discussion in 'GM Powertrain' started by Smokinstang70, Dec 21, 2009.

  1. Smokinstang70

    Smokinstang70 New Member

    Hey Guys.... newbie here.

    I need some help... I have a 2002 [COLOR=blue !important][COLOR=blue !important]Silverado[/COLOR][/COLOR] Z-71 w/ 117K... although I have never gotten great mileage, recently it has gotten HORRIBLE!!! (It seems like it happened all of a sudden). Has anyone else noticed this? What can be done? I have never done a complete [COLOR=blue !important][COLOR=blue !important]tune [COLOR=blue !important]up[/COLOR][/COLOR][/COLOR]... maybe time for new plugs, wires, etc? I'm not sure... just looking for ideas, suggestions, and help.

    Thanks... [COLOR=blue !important][COLOR=blue !important]great [COLOR=blue !important]site[/COLOR][/COLOR][/COLOR]

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