Our current Yukon doesn’t have a name, but when we had our ‘09 Suburban, my youngest would refer to it as “Mom’s Burban”. Since I like Bourbon, it was heard as “Mom’s Bourbon” and my wife got some strange looks from teachers when he would talk about getting into “Mom’s Bourbon” after school.
My wife and I have a 2003 and a 2019. Rather than call it them the new or the old Tahoe my wife refers to them as "T-1" and "T-2". The 2003 ( T-1 ) just turned 467,000 miles this week - original motor, have only replaced the timing chain b/c it was growling. Wore out some exhaust pipes of course and a couple of tranny rebuilds. Rides really well but she's a thirsty b*tch. 16-17 mpg