WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Power Transfer Unit Heat Shield Removal
Callout
Component Name
1
Power Transfer Unit Heat Shield
2
Power Transfer Unit Heat Shield Bolt [3x] Tighten 12 N.m (106 lb in)