Chevrolet Trailblazer Service Manual page 335

5. Detach the throttle body from the intake manifold.
6. Remove and discard the gasket from the throttle body.
To Install:
1. Install a new throttle body gasket to the throttle body.
2. For 2002-2004, attach the throttle body to the intake manifold. Torque the bolts to
89 in-lb (10 Nm).
3. For 2005-2007, attach the throttle body to the intake manifold. Torque the nuts and
bolts to 53 in-lb (6 Nm).
4. Connect the throttle body coolant hoses to the throttle body.
5. Connect the throttle actuator motor connector.
6. Install the air cleaner outlet duct into the engine compartment.
7. Refill the cooling system.
8. Make sure the vehicle is not in a reduced engine power mode, the ignition switch is
in the on position, and the engine is off.
9. Use a scan tool to check for a proper throttle opening and closing range.
10. Start the engine and check for leaks in the cooling system.