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 Pontiac Grand Prix GTPFACTORY OEM SERVICE PROCEDURE

Installation Procedure

Install the new gasket.
Install the throttle body assembly (1).

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the throttle body bolts (2) and the nuts (3).
Tighten: Tighten the bolts and the nuts to 10 N.m (89 lb in).

Fig 1: Identifying Throttle Body Assembly (L32)

Courtesy of GENERAL MOTORS CORP.

Connect the throttle body electrical connector.
Install the air cleaner intake duct. Refer to Air Cleaner Intake Duct Replacement .
Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L26) or Fuel Injector Sight Shield Replacement (L32) in Engine Mechanical - 3.8L.
Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.

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.