GM and Gearing
Looking at maybe an upgrade to GMC 2500 HD, just curious if anyone has the 342 gearing and what they think. It would be with gas. your experience if you please. I have a comparison of the 3:73 and 4:1...
Forum Discussion
What I have: 2019 Chevy Silverado 2500 hd 6.0 gas 4X4 4:10 extended cab with 6.6 bed. Previously was a 2010 GMC Sierra 2500 hd 6.0 gas 4X4 3:73 extended cab with 6.6 bed. Mileage seems to be a little worse with the newer truck. driving the typical route from Phx to Flag used to be about 6 1/2 MPG, now it is 6. I do have the extra umph when climbing but overall mileage is different. same trailer, loaded the same. other info needed?
