Exhaust Manifold Replacement - Left
Removal Procedure1. Remove the engine assembly.
2. Remove the exhaust manifold lower heat shield bolts.
3. Remove the exhaust manifold lower heat shield.
4. Remove the exhaust manifold upper heat shield bolts.
5. Remove the exhaust manifold upper heat shield.
6. Remove the AIR pipe bolts (1).
7. Remove the AIR pipe (2) from the exhaust manifold.
8. Remove the coolant pipe (3) and the engine lift bracket bolt (2) from the cylinder head.
9. Grasp the oil level indicator tube (4) firmly.
10. Pull the oil level indicator tube upwards for removal.
11. Remove the exhaust manifold nuts.
12. Remove the exhaust manifold.
13. Clean the cylinder head mating surfaces.
14. Clean the exhaust manifold mating surfaces if being reused.
Installation Procedure
1. Install the exhaust manifold.
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the exhaust manifold nuts.
^ Tighten the exhaust manifold nuts to 20 Nm (15 ft. lbs.).
3. Install the oil level indicator tube (4).
4. Install the coolant pipe (3) and the engine lift bracket bolt (2) to the cylinder head. Ensure the bolt (2) passes through all of the attached components.
^ Tighten the coolant pipe engine lift bracket bolt (2) to 20 Nm (15 ft. lbs.).
5. Install the AIR pipe to the exhaust manifold.
6. Coat the AIR pipe bolts with high temperature anti-seize compound, GM P/N 5613695 or equivalent.
7. Install the AIR pipe bolts (1).
^ Tighten the AIR injection pipe bolts to 20 Nm (15 ft. lbs.).
8. Install the exhaust manifold upper heat shield.
9. Coat the exhaust manifold upper heat shield bolts with high temperature anti-seize compound, GM P/N 5613695 or equivalent.
10. Install the exhaust manifold upper heat shield bolts.
^ Tighten the exhaust manifold upper heat shield bolts to 8 Nm (71 inch lbs.).
11. Install the exhaust manifold lower heat shield.
12. Coat the exhaust manifold lower heat shield bolts with high temperature anti-seize compound, GM P/N 5613695 or equivalent.
13. Install the exhaust manifold lower heat shield bolts.
^ Tighten the heat shield bolts to 8 Nm (71 inch lbs.).
14. Install the engine assembly.