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  1. Engines/Performance/Tech Questions
    Hello 355 Nation! Been using this forum for months now as I've just picked up a 2009 Colorado. Thank you for all your information!!!! The truck has 84000kms. Yes you read correctly kms. 4x4 i5 3.7 Z71 Crew Cab. Dark Grey. 265 70 17 k02 - tire pressure is perfect on all 4. 2" torsion bar lift...
  2. I4/I5 Engine & Drivetrain
    Hi. I have a 2009 Colorado, extended cab. It has the 3.7 5 cylinder engine. I'm looking for ways to improve gas mileage. I'm getting about 15 to 19 miles to gallon now. Any suggestions are appreciated. Thanks
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