I will be using my 2008 3500HD dually to tow my 5th wheel. Looking for an easy to use tuner to help with towing and mpg. Not worried about faster speed or high hp, just efficiency.
Thank you!
Sorry, these forums aren't for you. These are specifically for the mid-size Colorado and Canyon diesel trucks, if you want help with your full-size HD truck then you'll need to find the appropriate forums for it.
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