Sierra 3500 4WD V8-6.0L (2008)
39. Disconnect the EVAP tube quick connect fitting at the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service .
40. Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
41. Remove the EVAP tube and purge solenoid.
42. Remove the throttle body bolts/nuts.
43. Remove the throttle body.
44. Remove and discard the throttle body gasket.