Changing running gears
My 2005 GMC Sierra 1500 has the 5.3L (300hp) with 3.23 gears. I'm towing an 18' TT with a stated dry weight of 3215 pounds and I realize that this number is only a starting point for what I will be t...
Forum Discussion
Busdriver wrote:
Do you have a tranny cooler, if not you need one, if you do a gear change go to 4:10 will not hurt your fuel mileage muck over 3:73, the 2500 chevys with a 6.0 come with a 4:10
I'm sure it has a factory cooler but I'll be adding something better. I've even considered replacing the 4L60E tranny I have now with the 4L80E that comes in the HD 4WD models. I can buy a new one for less than $2k and a lot cheaper than a rebuild. I spent $2500 on a rebuild job on a Jeep Grand Cherokee.
I had a 3/4 ton GMC Sierra 2500HD 4WD and 4.10 gears that I traded for my current truck because of poor gas mileage and I didn't think I'd ever be towing anything larger than a utility trailer to take my zero turn mower in for service.
