It sounds like the fluid level could be low. Can you please shoot a quick video with your phone so we can hear the noise? That would be great. You can upload it here with your response. Here is how you check the fluid level, instruction in the diagrams below. It looks like they needed to ruin the car for five minutes to finish adding fluid?
Transmission Fluid Type
Type. MERCON V XT-5-QM
Transmission Fluid. 10.0 Quarts (9.5 Liters)
Note: Approximate dry fill capacity including transmission fluid cooling system, actual refill capacities will vary based on vehicle application and transmission fluid cooling system (i.E. Coolers size, cooling lines, auxiliary cooler capacities). The amount of transmission fluid and fluid level should be set by the indication on the dipsticks normal operating range. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Monday, December 2nd, 2019 AT 7:37 PM