Sluggish towing with GMC Yukon
I just picked up a used 2007 Jayco Exp 17C & towed it home last night with my 2011 GMC Yukon SLT. The drive was 2 hrs & lots of hills in TN. I had the tow mode on. It seemed to struggle up the big hil...
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APT wrote:lbrjet wrote:
3.08's are terrible towing gears.
While that is not the gear I like, it should be fine for towing that RV. It's very similar to the older 4-spd trans with 4.10 axle.
That bigger issue is that you do not have the HD towing package with additional transmission cooler that is only available with the 3.42 axle. Your tow rating is under 5500 pounds.
This is a good reference thread for you.
I recommend getting a trans cooler, using tow/haul like you have, and M4. You want to cruise in the 2200-2800rpm range on flat ground and let it downshift on hills to whatever you want to hear or pay the fuel for.
May be similar in first gear but in 4th it is like having 3.55 gears, rather than the direct 4.1 on the 4 speed. This is the reason it feels sluggish.
