Installation Procedure
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Install the front exhaust manifold pipe flange and a NEW seal onto the exhaust manifold.
- Insert the upper right exhaust manifold bolt to the manifold in this location (2).
- Place the NEW exhaust manifold gasket over the bolt and against the manifold.
- Insert the exhaust manifold into the front exhaust manifold pipe and against the cylinder head.
- Finger start the exhaust manifold bolt.
- Install the remaining exhaust manifold bolts and tighten all exhaust manifold bolts starting from right to left beginning with the bolt in this location (2).
Tighten
Tighten the bolts to 25 N.m (18 lb ft).
- Install the exhaust manifold front pipe bolts (2).
- If reusing the old HO2S, coat the threads with anti-sieze compound, GM P/N 12377953 or equivalent.
- Install the HO2S.
Tighten
Tighten the sensor to 41 N.m (30 lb ft).
- Connect the engine harness electrical connector (3) to the HO2S.
- Install the CPA retainer.
- Install the front engine mount bracket. Refer to Engine Front Mount Bracket Replacement .
CAUTION:
Refer to Fastener Caution .