I am new to this thread with a 2016 Yukon Denali. Been great for 2 weeks since I purchased used from a local dealer. My luck today got the check engine light on and ran code and it says P0711. The dreaded Transmission Temp Sensor error etc...The system had a transmission flush service prior to me owning it a few thousand miles ago. I guess I have to bring to dealer to fix.....I reset code to see if it returns. How long am I able to drive this way? Should I take in ASAP?
Sincerely, Lenny
2016 Yukon Denali, 58000 miles.