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Is OK " D"mean discontinue, and " i " mean update model 8 speed. [emoji2]Sorry but I am not familiar with the "I" or "D" designation. Build Plate show "K". If designation has to do with the manufacturing date, I ordered my highly optioned SLT XL in January 2014 and it was built in in March 2014.
Is a lot people here will be very mad about we tough they fixe but the new update transfer case is the same as the old, if you check back old post I said they do not update nothing was pure "BS" is not right. But we have to live with this now. Good luck [emoji19]I have a 2015i Yukon Denali and today was my day to join the 4-wheel drive problem family-848 Miles
Got up and hopped in to to work and went down the drivewy 35 feet turned left to go down the street and felt the steering jerk like it does when in 4 -wheel drive on pavement
Pulled over and checked the position of the switch which was in 2 wheel drive
Looked at the dash and saw service 4 wheel drive
Drove a little and found it was truly in 4 -wheel drive high
Made an appointment for Thursday
I'll let you all know what happens
When you use in auto it make any vibration or noise in the front of the car. [emoji19]Went to dealer
Reprogrammed Transmission all well so far
Never had it in auto
Just got up to go to work and it was in 4-Wheel drive
Could tell as soon as I turned
No vibration just normal 4-Wheel drive feel when on pavement