I'm looking to upgrade my TV and have two trucks that are the same expect the trans. & diff. in mind. one is a 2009 Chev with 5.3, 4 speed trans. 3:73 diff. the other is a 2010 Chev with 5.3, 6 spee...
Don't listen, it will tow just fine. I love my set up and go anywhere I want with no problems. The Six speed will be much better. You sure that 2009 doesn't have the 6spd? I thought 2008 was the last year of the 4spd. My trailer is about 6500lbs loaded by the way.