OEM 2009 Cadillac XLR Exhaust Manifold

2009 Cadillac XLR Parts Questions & Experts Answers

• Q: How to replace the right exhaust manifold on 2009 Cadillac XLR?

  A: The powertrain needs removal before performing a right Exhaust Manifold replacement task. Begin by removing the bolt attaching the catalytic converter pipe to the bell housing followed by removing the connector position assurance for the Oxygen Sensor and disconnecting both Oxygen Sensor electrical connectors (1, 2). One must practice safety precautions for working with oxygen sensors. You should start by separating the oxygen sensors before pulling off the right Exhaust Manifold heat shield bolts and its accompanying heat shield. After you remove the bolts and nuts from the Exhaust Manifold proceed to take off both the manifold and worn gasket which you must dispose. Use gm p/n 12345493 (Canadian P/N 10953488) threadlock equivalent to apply a 0.2 inch wide band at the Exhaust Manifold bolt and stud threads for installation purposes. Lay the Exhaust Manifold on its designated position with a new gasket while making sure the threads of cylinder head Exhaust Manifold bolt holes remain unobstructed. The Exhaust Manifold bolts require installation followed by nut tightening at 25 nm (18 lb ft) with a starting point at the center pair of bolts while using an alternating side-to-side approach. Securely bolt down the Exhaust Manifold together with the catalytic converter to the bell housing keeping the exhaust hanger bolt at a torque setting of 50 nm (37 lb ft). Secure the right Exhaust Manifold heat shield together with its bolts while torquing them to 10 nm (89 lb in). The Oxygen Sensor threads should receive an application of gm p/n 12377953 anti-siize compound or its equivalent material before installing the sensors with a torque setting of 42 nm (30 lb ft). The Oxygen Sensor electrical connectors need to be connected first before installing the cpa locks . Finally, reinstall the powertrain.