My16 started the groan at about ~1700 or so best I remember. Currently at just 2400 mil with build date of 12/15.
I have had no luck with the dealership 3 times I brought the car there as they can't reproduce it after driving a warmed up car. Im going to have them change the fluid next week and go from there. Then a drop off the night before so they can hear it. Im documenting every call and visit I make.
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Black '16 2SS-- A8. MRR M017 1LE Replicas- Eagle Supercar 3's-- 305-30-20 rear--285-30-20 fronts. Roto Fab w sound delete-Ported MSD Air Force Intake Ported Stock TB-Kooks 1 7/8 LT Catless Headers Secondary Cat delete-Stainless Works Cat Back w NPP- GM Front Strut Brace-Elite Eng.Oil-Air separator-35% Tint.-BMR #SP041's Springs. BMR Front End Links-Black Bow-Ties- Installed and Tuned at Vengeance Racing Cumming GA- 476rwhp-473rwtq. Best 1320' ET= 11.37 @119.9 -1.66- 60' with 28" MT Street ET-R's on Dark Star 92's
Wish List: Procharger next.