Express 3/4 Ton Van V8-4.8L VIN V (2003)
Exhaust Manifold: Service and Repair
Exhaust Manifold Replacement - Left
Exhaust Manifold Replacement - Left (4.8L, 5.3L, 6.0L)
Removal Procedure
1. Raise the vehicle. Refer to Vehicle Lifting.
2. Remove the catalytic converter from the exhaust manifold.
3. Remove the engine cover.
4. Disconnect the EGR valve pipe from the exhaust manifold if equipped.
5. Remove the spark plug wires.
6. Remove the exhaust manifold
7. Clean all sealing surfaces.
Installation Procedure
Notice: Refer to Fastener Notice in Service Precautions.
1. Install the exhaust manifold.
1.1.
Tighten the exhaust manifold bolts - First Pass to 15 Nm (11 ft. lbs.).
1.2.
Tighten the exhaust manifold bolts - Second Pass to 25 Nm (18 ft. lbs.).
2. Connect the EGR valve pipe to the manifold.
3. Install the spark plug wires.
4. Install the exhaust pipe to the exhaust manifold.
5. Install the engine cover.