I'm a bit concerned my 2012 Chevy 6.0L gas 3/4 ton will have power problems when towing doubles. what can I do to increase Torque/Horsepower and not void my warranty.
Sell it and buy a diesel. I did and don't regret it for a moment after making my first diesel tow this week. I had a 2009 GMC 2500 6.0 gasser and researched changing rear gears. I had two dealers tell me the only way to do it properly was to have the tranny re-programmed but would not do it or recommend anyone who could. I traded it last October for a 2013 2500 with a Duramax and love it.