Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2004 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Removal Procedure

Remove the fuel injector sight shield. Refer toFuel Injector Sight Shield Replacement in Engine Mechanical-3.8L.
Disconnect the throttle position (TP) sensor electrical connector.

Fig 1: Disconnecting TP Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Remove the 2 TP sensor screws.

Fig 2: Removing TP Sensor Screws

Courtesy of GENERAL MOTORS CORP.

Remove the TP sensor.

Fig 3: Removing TP Sensor

Courtesy of GENERAL MOTORS CORP.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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