What is it that you are replacing, or trying to get to?
I was thinking maybe you were trying to just get behind or underneath there. I dont have any info on the dash board itself so i will open your question back up, and if another expert is famillar with it, they will email ya...Good luck!
Good afternoon, is this a 1500, 2500, or 3500? Also are you replacing the upper dash cover due to being cracked? Or are you speaking of the dash trim bezel that surrounds the cluster and radio?
Please check the picture and let me know exactly what part# you are needing to replace.
Also, have you spoke with the dealer about the cracking, I work at a dealer and replace alot of these. If out of warranty then they usually cover the repair and the customer just pays $100. I would recommend checking with the dealer and if they are no help then ask for the district rep and explain the problem.
I'm located in Georgia so I dont believe it will help you. I work at Thomson Motor Center located in Thomson Georgia.