Hello all, I did a search to see if I could find a possible solution to my issue, but didn't find anything on the topic. I have an alarming situation ( I think ) with my 2015 Z51 C7 Coupe that the dealer checked and couldn't find anything wrong with. I have found that recently when I get caught in the rain on the way home, or wash the car , - and put it in the garage ( without engaging the parking brake ) ( which is heated at 10 degrees celcius to take the edge off the cold ), and don't drive it for 6 - 8 days, then when I go to drive it , this happens : I start it, wait 10 seconds, put it into gear and a loud metallic " cracking sound " happens ( almost like the brakes were seized and suddenly let go ) with a slight delay in fwd motion. Once, the car didn't move at all when put into gear, so I gently put it in reverse / fwd a few times to loosen whatever the issue was and it didn't move until I gave it a bit of gas ( then the cracking sound was much louder ). Once the car is in motion, there is a slight squeal , then everything is fine and the brakes perform fine for the drive. The Dealer says they cannot duplicate the symptoms, so they are un-able to diagnose it. This is NOT an intermittent problem , as it happens 100% of the time the car gets wet. I suggested they not leave the car in their shop for the week as the heated environment may dry / change the symptoms. My next step is to wet the car down, leave it for a week, and video the sound it makes when I start it again to play it back to them. Any thoughts from anyone having experienced this ? I appreciate the opportunity to share my issues here on a fantastic site.
Peter
Peter