5.3L FINALLY get's VVT and cylinder de-activation.

Spoolin · 2009-08-04 09:24:53

22mpg!! :cool: http://www.leftlanenews.com/gm-ups-silverado-sierra-highway-rating-to-22-mpg.html

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Aug 4, 2009 | 04:24 AM

Spoolin

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5.3L FINALLY get's VVT and cylinder de-activation.

22mpg!!

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