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.

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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISENGINE MECHANICALENGINE EXHAUST SYSTEMREPAIR INSTRUCTIONSCATALYTIC CONVERTER HEAT SHIELD REPLACEMENTINSTALLATION PROCEDURE

2008 Pontiac Grand Prix Base

Installation Procedure

2008 Pontiac Grand Prix BaseSECTION Installation Procedure

Fig 1: View Of Catalytic Converter Heat Shield

Courtesy of GENERAL MOTORS CORP.

Position the catalytic converter heat shield to the underbody.
Install NEW catalytic converter heat shield rivets.

Fig 2: Bank 2 Sensor 2 Electrical Harness Connector

Courtesy of GENERAL MOTORS CORP.

Install the HO2S wiring harness from the clips on the catalytic converter heat shield.
Install the catalytic converter. Refer to Catalytic Converter Replacement (L26) or Catalytic Converter Replacement (LS4) .

RENDER: 1.0x

NO RELATED

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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.