ksu_j wrote:
We were traveling with my dad who was pulling a 27ft travel trailer behind his 2007 1500HD with the 6.0 V8.
Is this a "classic" 1500HD based on the GMT800 platform? Or is this a GMT900 with the VortecMax package?
Either way, I think your dads 6L has a 4 speed transmission behind it and that would explain why your truck does so much better. It would really be interesting to compare the 6L/6 speed combo to your rig.
Glad you like your Suburban. About the only reason my wife misses hers is because the ride was a little better than her van.