- Remove the throttle body bolts.
- Remove the throttle body.
- Remove the throttle body studs, if required.
- Remove the manifold absolute pressure (MAP) sensor bolt and clip.
- Remove the MAP sensor.
- Remove the evaporative emissions (EVAP) purge valve bolt.
- Remove the EVAP purge valve.
- Clean the intake manifold with solvent.
- Dry the intake manifold with compressed air.
- Inspect all gasket mating surfaces for nicks or cracks and replace if necessary.
- Inspect the EVAP purge valve seal for damage and replace if necessary.
- Install the EVAP purge valve.
- Install the EVAP purge valve bolt.
- Inspect the MAP sensor seal for damage and replace if necessary.
- Install the MAP sensor.
- Install the MAP sensor clip and bolt.
- Install the throttle body studs, if required.
- Inspect the throttle body seal for damage and replace if necessary.
- Install the throttle body.
- Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the throttle body bolt threads.
- Install the throttle body bolts.
Caution: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the EVAP purge valve bolt to 16 N·m (12 lb ft).
Tighten
Tighten the MAP sensor bolt to 10 N·m (89 lb in).
Tighten
Tighten the throttle body studs to 6 N·m (53 lb in).
Tighten
Tighten the throttle body bolts to 10 N·m (89 lb in).
