Got a 2018 Chevy Silverado 1500 LT, whenever I start her up she has a grinding/clanking noise only when in park though once I kick her into drive its quiet and drives fine. It hasn't affected the start up or my driving experience yet (fingers crossed) I should also probably mention this only started happening once I brought her up north. Any idea on what it could be and if its a take it to a shop fix or something I can do with a bit of elbow grease and know how?