One problem related to automatic transmission floor shift has been reported for the 2018 Chevrolet Traverse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Chevrolet Traverse based on all problems reported for the 2018 Traverse.
I have had two major issues. First is the whole "shift to park" message that you have to vigorously wiggle the transmission lever to get to go away so you may exit the vehicle. I have had it in the dealer for it once already and they said they replaced the wireing harness. This did nothing. I am the second owner and I had that done at about 35,000 miles but it never completely went away. Now I am at 50,000 miles and for the last few weeks I have been noticing terrible high pitch noise that sounds like bad road noise but its coming from the drive train. So far it has seemed to happen mostly around the 72 to 78 mph range on the hwy. As soon as you let off the gas the noise goes away but 50% of the time the noise comes back when you reapply the gas. Sometimes it takes drastically changing speed and then trying to get back to normal. My family and I travel a lot. That's why we got the Traverse and otherwise have loved it! but I am so very scarred that my family will get stranded in busy and dangerous traffic.