Grand Prix V8-5.3L (2007)
4. Install the exhaust pipe rear hanger bracket(s) (dual exhaust).
5. Install the exhaust pipe rear hanger bracket bolts (dual exhaust).
Tighten the bolts to 25 N.m (18 lb ft).
6. Install the exhaust hanger bracket (2) (single exhaust).
7. Install the exhaust hanger bracket bolt (3) (single exhaust).
Tighten the bolt to 25 N.m (18 lb ft).
8. Install the exhaust hanger.