Sierra 1500 4WD V8-5.3L VIN B (2005)
7. Remove the Positive Crankcase Ventilation (PCV) hose.
8. Remove the MAP sensor (1) from the intake manifold.
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).
