GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1523560  Size: SH
  1. Remove the evaporative emission (EVAP) canister purge solenoid valve harness.
  2. 1.1. Push the quick disconnect clip and hold in place.
    1.2. Pull outward on the harness elbow.

    Object Number: 31510  Size: SH
  3. Remove the engine coolant temperature (ECT) sensor wire connector, if equipped, from the engine wiring harness bracket.
  4. Remove the lower intake manifold bolts.
  5. Important: 

       • The intake manifold may be removed as an assembly. Do not remove the specific intake manifold components unless component service is required.
       • Do not allow dirt or debris to enter the fuel system. Ensure that the ends of the fuel system are properly sealed.

  6. Remove the intake manifold assembly.
  7. Remove and discard the lower intake manifold gaskets.