Envoy 2WD V6-4.3L VIN W (1998)
1. Install the heated oxygen sensors (H02S) as necessary.
2. Install the exhaust manifold pipe to the vehicle.
3. Install the exhaust manifold pipe to manifold flange nuts.
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Tighten the exhaust manifold pipe to manifold flange nuts to 53 Nm (39 ft. lbs.).
4. Install the catalytic converter.
5. Connect the RH heated oxygen sensor (H02S) electrical connection.
6. Connect the LH heated oxygen sensor (H02S) electrical connection.
7. Lower the vehicle.
