Luckily this wasn't the case, but I did have to get a GM Canada compliance letter to bring her over the border. Fun fact: Canada does not require the lighted passenger airbag On/Off illumination, thus I had to add a $60 bulb to comply. US Customs specifically asked to see the service record and the bulb working!
At least you were bringing in one of the easiest and cheapest vehices to import, (not price of course but for importation) Had you had the Yukon SLT or SLE trim, then the gage cluster would have needed to be swapped out as only the Digital speedo in the DIC would say MPH, even the temp gages on the heater/AC would have stayed Metric. With the uplevel dash cluster all readings turn into American Standard. I don't know about you guys but a Oil Pressure Gage that reads KPA is not natural, it should stay PSI as God Intended. Volvo18psi is right on the money about the FCA not allowing warranty, GM and Ford as well as Toyota , etc have also caught on and are now refusing warranty service. To get around this, the Brokers and their associate dealers are offering their own Long Term warranties, it remains to be seen how that will play out.