Chevrolet TrailBlazer, Service Manual

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7. Detach the catalytic converter from the muffler.
8. Remove the exhaust hanger insulators from the exhaust system and move the
exhaust system rearward.
9. Detach the catalytic converter from the left and right exhaust manifolds.
10. Remove the catalytic converter from the vehicle.
To Install:
1. Place the catalytic converter into the vehicle.
2. Install the exhaust hanger insulators onto the exhaust.
3. Attach the catalytic converter to the muffler. Torque the bolts evenly to
33 ft-lb (45
Nm) .
4. Attach the catalytic converter to the left and right exhaust manifolds. Torque the
nuts to 37 ft-lb (50 Nm) .
5. Install the transmission support onto the frame.
6. Remove the jack supporting the transmission.
7. For vehicles with 4WD, install the front propeller shaft into the vehicle.
8. Install the rear propeller shaft into the vehicle.
9. If reinstalling the old heated oxygen sensors (HO2S), coat the threads with anti-
seize compound GM P/N 12377953.
10. Install the heated oxygen sensors (HO2S) into the catalytic converter. Torque the
sensors to 31 ft-lb (42 Nm) .
11. Lower the vehicle.