GM 12605109 Fuel Injection Air Meter Body (W/Throttle Actuator)

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Disconnect the cable from the negative terminal of the battery. Remove the engine covers. Remove the air intake duct. For V6 engines, disconnect the throttle body electrical connector. If equipped, rotate the wiring harness holder down and off of the throttle body. Remove the throttle body mounting bolts and detach the throttle body from the intake manifold. For V8 engines, disconnect the throttle body electrical connector. If equipped, rotate the wiring harness holder down and off of the throttle body. Remove the throttle body mounting bolts and detach the throttle body from the intake manifold. For all models, discard the gasket; it should be replaced with a new one. Cover the intake manifold opening with a clean shop towel. Installation is the reverse of removal. Install a new gasket, tighten the throttle body fasteners to the torque and perform the idle relearn procedure. Start the engine and allow it to idle for three minutes. If a scan tool is available, connect it and monitor the engine idle speed. After the three minutes, the PCM will start to learn the new idle patterns and begin adjusting the idle speed. The engine idle should begin to slow to almost normal. When that happens, turn the engine off for one minute, then start the engine and allow it to idle again for three minutes. At the end of the second three-minute cycle, the idle should be normal. If the check engine light comes on during the cycles, clear the codes after the second three-minute cycle ends. If the engine does not idle properly alter the relearn procedure, drive the vehicle above 44 mph, then decelerate and accelerate several times, allowing it to idle in between. Stop the vehicle and turn the engine off for one minute; the engine should now idle normally. Clear any codes that are present.

Start by disconnecting the cable from the negative terminal of the battery and removing the engine covers.