My 2018 Traverse just recently started having this issue @ 38,000 miles. I put car in park, then get a warning to "shift to park". I have to jiggle the shifter to get it to engage and clear the warning. Took it into the dealership, they said there is a TSB out on this issue. They want me to pay $500 for the replacement of Shifter Assembly and Harness. I was not happy with this, since it is a common issue, with a faulty part. I was advised to contact Chevy Customer Care - waste of time. Their exact words were your vehicle is out of warranty, therefore we do not cover the repair. But, they'd be happy to sell me an extended warranty! It would not cover this repair, but anything moving forward. Yeah, ok. So if GM is aware of this faulty part on their 2018 Travers, why would they not recall it or at least foot the bill when it does occur? Man, it's been many years since I owned a GM vehicle. I know back in 2000, if there was a TSB on my GMC Jimmy, the dealership fixed the issue at no charge, even with being out of warranty. My vehicle is just past the bumper to bumper warranty, and they still expect me to pay for a known faulty part? I will sell this Traverse back to the dealership in a heartbeat if this is how GM/Chevy handles customer service.