Old thread but didnt see a newer one in the search.
I complained about the rumble / steering wheel vibration a few years back at Sheehan in south florida but I didn't get my complaint documented properly in the vehicle history. Doubt they would have done anything now that I'm out of warranty anyway
They want $3.5k for a torque converter replacement. $1500 in parts (seals, converter, filter, bolts, clamps etc etc etc) and $2k in labor
2017 sierra 1500 denali. Bought new in 2018, 54k miles
Another mexican GM lemon