C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
6. Remove the EGR pipe from the upper intake manifold. Refer to EGR Pipe Replacement.
7. Remove Left and Right Side Secondary AIR Injection Pipe. If so Equipped. Refer to Secondary Air Injection Check Valve/Pipe Replacement.
8. Remove the ignition coil from the intake manifold. Refer to Ignition Coil and 1CM Replacement.
9. Remove the throttle body from the upper intake manifold. Refer to Throttle Body Assembly Replacement.
10. Remove the EVAP canister solenoid valve. Refer to EVAP Canister Purge Solenoid Valve Replacement.
11. Remove the number 8 spark plug wire from the distributor. Refer to Spark Plug Wire Harness Replacement.
12. Remove the upper intake manifold bolts.
13. Remove the upper intake manifold and gaskets.
14. Clean the excessive carbon deposit from the exhaust and the EGR valve passages. Refer to Cylinder Head Clean and Inspect.
Installation Procedure
1. Install the upper intake manifold gaskets.
2. Install the upper intake manifold.
