I took my truck in last week to the dealer and they confirmed I needed a part that they had to order from US. I just confirmed my booking with my dealer this morning. Not sure which part it is yet.
I noticed when mine was acting up the click I hear In the column when pressing the break pedal was faint or not there. When I told my dealer that, they new what to look for.
Temperature didn’t seem to matter.
The date on my door jamb is 12/19. I drove my truck today with no issues. I can hear a click when I press the break before I put in gear. I’ll see if that click is there when I have the issue.
I have a 2020 GMC Sierra Elevation with x31 and 3.0L Duramax. Had this shifter issue a few times now around 4000km. I haven’t spoken to dealer yet. I thought it was because of the cold as it happened on a -20°C day. Let the truck thaw in heated garage over the weekend and had it happen again today at 0°C after it sat idling for a few minuets.