GM Service Manual Online
For 1990-2009 cars only

    Object Number: 464717  Size: SH

    Important: California emissions vehicles are equipped with an additional (PUP) catalytic converter and a different exhaust manifold from federal emissions vehicles.

  1. Perform the following if the vehicle is equipped with the PUP catalytic converter:
  2. 1.1. Remove the 3 bolts and 2 nuts and remove the exhaust manifold heat shield from the exhaust manifold.
    1.2. Remove the exhaust manifold-to-engine block bracket.
    1.3. Remove the oxygen sensor.
    1.4. Remove the 1 bolt and the 8 nuts from the exhaust manifold.
    1.5. Remove the exhaust manifold and gasket from the cylinder head.

    Object Number: 464715  Size: SH
  3. Perform the following if the vehicle is not equipped with the PUP catalytic converter:
  4. 2.1. Remove the 4 bolts and 1 nut and the exhaust manifold heat shield.
    2.2. Remove the exhaust manifold-to-engine block bracket.
    2.3. Remove the oxygen sensor.
    2.4. Remove the 1 bolt and the 8 nuts from the exhaust manifold.
    2.5. Remove the exhaust manifold and gasket from the cylinder head.