OEM GMC Acadia Exhaust Manifold

GMC Acadia Exhaust Manifold Parts and Q&A

• Exhaust Manifold, Passenger Side
  12588987
  Q: How to replace the right side exhaust manifold on GMC Acadia?

  A:

  The first step to replace the right side Exhaust Manifold requires the removal of the Catalytic Converter together with the Exhaust Manifold heat shield. After removing the Exhaust Manifold bolts other gaskets should be discarded. Extract both Exhaust Manifold along with its gasket for disposal from the automobile. First install one Exhaust Manifold bolt onto the Exhaust Manifold before setting a new Exhaust Manifold gasket on the Cylinder Head and bolting it in. Secure the Exhaust Manifold (together with its gasket) onto both the Catalytic Converter and the Cylinder Head while following the specified fastener instructions. Mount the Exhaust Manifold bolts starting with one component 20 n.m (15 lb ft) fastening torque. The conclusion of the replacement procedure requires reinstallation of the Exhaust Manifold heat shield together with the Catalytic Converter.
• Exhaust Manifold
  12571100
  Q: How to replace the left side exhaust manifold on GMC Acadia?

  A:

  The replacement process of the left side Exhaust Manifold begins by uninstalling the Exhaust Manifold heat shield along with the oil level indicator. The procedure starts by removing Exhaust Manifold nuts that connect the Catalytic Converter along with the Exhaust Manifold bolts. The gasket must be discarded since it will not be used again after the Exhaust Manifold removal. First install one Exhaust Manifold bolt onto the Exhaust Manifold followed by positioning the new Exhaust Manifold gasket on the Exhaust Manifold and the bolt. Follow the fastener notice while connecting the Exhaust Manifold with gasket between the Cylinder Head and the Catalytic Converter. Fasten the remaining Exhaust Manifold bolts while tightening them to 20 n.m (15 lb ft). Attach the Catalytic Converter with a torque of 50 n.m (37 lb ft) to the Exhaust Manifold nuts. To complete the work you should place back the oil level indicator and the Exhaust Manifold heat shield.