Sierra 3500 4WD V8-6.0L VIN U (2004)
9. Remove the evaporative emission (EVAP) purge solenoid vent tube by performing the following:
1. Remove the EVAP tube end from the solenoid (1).
2. Remove the EVAP tube end from the vapor pipe (2).
10. Remove the EVAP purge solenoid bolt (2), solenoid (3), and isolator (1) from the intake manifold.