My 2020 2500HD Duramax LTZ has this issue. I have not taken it to the Dealer yet. Has there been a resolution, other than hitting the latch with a BFH?
Put my truck on my buddies lift today and hit 8 of the 9 zerks. One requires a 90 degree fitting to get to, so I'll get it next week. There was plenty of room for grease...Glad I saw this post today.