For 1990-2009 cars

1. Install the upper intake manifold gaskets.
2. Install the upper intake manifold.

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.

3. Install the upper intake manifold bolts and studs. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads.

Tighten
Tighten the upper intake manifold bolts and studs to 25 N·m (18 lb ft).

4. Install the EGR valve pipe and bolt to the EGR.

Tighten
Tighten the EGR valve pipe bolt to 25 N·m (18 lb ft).

5. Install the EGR valve.
6. Install the EGR valve bolts.

Tighten
Tighten the EGR valve bolts to 25 N·m (18 lb ft).

7. Install the map sensor bracket and bolts.

Tighten
Tighten the MAP sensor bracket bolts to 25 N·m (18 lb ft).

8. Install the MAP sensor.
9. Install the MAP sensor bolts.

Tighten
Tighten the MAP sensor bolts to 5 N·m (44 lb in).

10. Install the MAP sensor electrical connector.
11. Install the vacuum lines to the upper intake manifold.
12. Install the throttle cable bracket.
13. Install the throttle cable bracket bolts.

Tighten
Tighten the throttle cable bracket bolts to 13 N·m (115 lb in).