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Hybrids, XFE, & Active Fuel Management

GM's Hybrid Trucks & SUVs, thel saving XFE model, and the Active Fuel Management system for the 2007-2013 model years.

428 topics in this forum

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  2. 2500hd 6.0l Gas Mileage. 1 2

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  3. 1 St E-85 Fill Up 1 2

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  4. Cold Air Intake?

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  5. Gas Mileage 1 2 3 4 8

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  6. Top Tier Gas - Citgo?

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  7. Tune?

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  8. 08 Chev Silverado 1500

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  9. 2011 Dmax Mpg

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