Installation Procedure

Fig 1: Exploded View Of Throttle Body

Courtesy of GENERAL MOTORS CORP.

NOTE: DO NOT reuse the throttle body gasket. Install a NEW gasket during assembly.

Install a NEW throttle body gasket (509). Align the locating tab of the gasket with the notch in the manifold.
Position the throttle body (508) to the intake manifold.

CAUTION: Refer to Fastener Caution .

Install the throttle body bolts (538).
Tighten: Tighten the bolts to 10 N.m (89 lb in).

Fig 2: EVAP Canister Purge Tube To Throttle Body

Courtesy of GENERAL MOTORS CORP.

Connect the EVAP canister purge tube to the throttle body. Refer to Plastic Collar Quick Connect Fitting Service .

Fig 3: View Of Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

NOTE: Verify that the throttle actuator motor harness connector and the connector seal are properly installed and not damaged.

Connect the throttle actuator control motor electrical connector (3).
Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
Connect a scan tool in order to test for proper throttle opening and throttle closing ranges.
Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between closed throttle, and wide open throttle (WOT).
Verify that the vehicle meets the following conditions:
- The vehicle is not in a reduced engine power mode.
- The ignition is ON.
- The engine is OFF.
Perform the throttle learn procedure. Refer to Throttle Learn .