Grand Prix V6-191 3.1L VIN M SFI (1998)
Intake Manifold: Service and Repair
Lower Intake Manifold
REMOVAL PROCEDURE
1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Starting and Charging.
2. Remove the upper intake manifold. Refer to Intake Manifold Replacement (Upper).
3. Remove the left (front) valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement (Left Front).
4. Remove the right (rear) valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement (Right Rear).
5. Disconnect the Engine Coolant Temperature (ECT) wiring harness.
6. Disconnect and remove the fuel injector and Manifold Air Pressure (MAP) wiring harness.
7. Remove the fuel pipe clip bolt.
