Re: 2500HD VS 3500

Posted by GregInCO on February 21, 2020 at 17:03:51 from (174.209.17.75):

In Reply to: 2500HD VS 3500 posted by Ultradog MN on February 21, 2020 at 14:51:28:

I bought a 2017 GMC 2500 HD extended cab (double cab) with the 6.0 LS gas engine. It came with 4:10 gears and the 6L90 trans and a locking rear differential. I don’t think the 4:56 gears are available anymore and I don’t think they put 3:70 gears in the HD’s. I don’t remember what the GVW is on it, but it is higher than the 96 1 ton dually I had before it was. It has the work truck package so pretty plain. Cloth seats and rubber floor mats. I’m also like the way the trans is managed. If pulling a trailer just put it in tow/haul mode and smash on the gas. It will take care of itself just fine. Never a need to manually operate the trans. Gas mileage isn’t great. 14 is it and it doesn’t seem to matter much how you drive it. I’ve babied it and ran the stuffing out of it and no real noticeable difference. If you haven’t driven a truck with one of the LS engines in it takes a little getting used to. They are high reving engines and are very happy pulling heavy trailers between 3,500 and 5,500 rpm. Rev limiter will catch it at 6,000 if you get carried away. It won’t let you hurt it.
As far as the ride difference between the 2500 and 3500 the 3500 will be a little stiffer, but not horrible. The trans will be the 6L90 same as the 2500. The 6L90 is super tough and will take whatever you can throw at the truck. I had some heavy trailers towing over the mountain passes and they stay cool. Engine temp never moves and the trans never gets over 195. Unloaded the trans runs between 140 and 160. Gas mileage will be about the same considering the gear ratios are probably the same and the two trucks weigh being within 400 lbs of each other.

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