May 9, 2024 at 9:37 am
#812231
Participant
Following up. This is not a turbo whistle its a whine. The dealer has now acknowledged that they are two seperate types of noises. I drove on purpose a new one from the lot to prove its not “normal” with them in the vehicle. Finally Ive been given some answers but not a solution yet. The Siverados with the same engine have the same whine and they have determined it to be from “balancing gears” which make an “annoying whine” per GM. they said wait to 10K and usually it goes away but “that its normal on 2.7L” and that they will soon have “a response”. Make sure to have it documented and — dont let them tell you its the turbo. You can find articles about the balancing gears. Hope this helps and please let me know how it goes.