Cutlass V6-191 3.1L VIN M SFI (1998)
17. Clean the mating surfaces at the cylinder head and at the exhaust manifold.
INSTALLATION PROCEDURE
1. Install the exhaust manifold gasket.
2. Install the exhaust manifold. Loosely, install the heat shield at this time.
3. Install the exhaust manifold nuts.
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Tighten the exhaust manifold nuts to 16 Nm (12 ft. lbs.).
Refer to Fastener Notice in Service Precautions.
4. Install the exhaust manifold heat shield.
5. Install the exhaust manifold heat shield nuts.
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Tighten the exhaust manifold heat shield nuts to 10 Nm (89 inch lbs.).
6. Install the converter heat shield to the body.
7. Install the exhaust pipe to the converter flange.
8. Install the exhaust pipe to the exhaust manifold.
9. Install the transmission oil level indicator and fill tube assembly. Refer to Filler Tube and Seal in Automatic Transmission.
10. Lower the vehicle.
11. Install the heated oxygen sensor.
