GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 4WD 🢒 Engine 🢒 Engine Controls and Fuel - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Evaporative Emission Hoses/Pipes Replacement - Engine

Removal Procedure

Important: Clean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.


    Object Number: 1706143 Size: SH
  1. Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Disconnect the EVAP line quick connect fitting at the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Disconnect the EVAP line quick connect fitting at the EVAP canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service .

Installation Procedure

    Object Number: 1706143 Size: SH
  1. Connect the EVAP line quick connect fitting at the EVAP canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service .
  2. Connect the EVAP line quick connect fitting at the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Install the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .