I am looking at a 2019 Tahoe with 148K on it. Its a former DPS Tahoe. I pulled the Carfax and it shows tons of service records, mostly oil/filter, brake pads, tires, starter, window regulators etc. At 72K it shows a trans fluid flush/change and filter and again at at 120K miles. Would you trust that this trans might still be decent or its probably going to grenade itself anyway so who cares? Haha