comrades - 2018 95,000 miles g56. two times today after turning truck off a low pitch growl from turbo side of hood made noise for maybe 4 seconds after shut off. first time i have ever noticed that. idled before shut down, as i usually do for 30 sec. boost is 26 psi at 2200 rpm up hill 5th gear mashed to floor empty. 9000 feet in elevation. am i imagining bad things for no reason or ? your input is much appreciated. cheers!
thanks.
